Document:

<PAGE>

                                                                   Exhibit 10.42

                                                                [Execution Copy]

                             STOCKHOLDERS' AGREEMENT

         THIS STOCKHOLDERS' AGREEMENT (this "AGREEMENT") is entered into as of
October 6, 2000, by and among Cablevision Systems Corporation, a Delaware
corporation (including any successor pursuant to this Agreement, "CABLEVISION"),
CSC Holdings, Inc., a Delaware corporation (including any successor pursuant to
this Agreement, "CSC HOLDINGS"), a wholly-owned subsidiary of Cablevision,
National Broadcasting Company, Inc., a Delaware corporation ("NBC"), and
NBC-Rainbow Holding, Inc., a Delaware corporation (including any successor
pursuant to this Agreement, "NBC-RAINBOW"), a wholly-owned subsidiary of NBC.

         WHEREAS, CSC Holdings and NBC-Rainbow are the stockholders of Rainbow
Media Holdings, Inc., a Delaware corporation (including any successor thereto,
"RAINBOW MEDIA HOLDINGS");

         WHEREAS, in connection with the filing of Rainbow Media Holdings'
Amended and Restated Certificate of Incorporation, Cablevision, CSC Holdings,
NBC and NBC- Rainbow desire to enter into this Agreement to provide for certain
rights and obligations of NBC-Rainbow with respect to any capital stock of
Cablevision or Rainbow Media Holdings held by NBC-Rainbow or any Affiliate or
Associate (as defined below) of NBC-Rainbow, including NBC-Rainbow's right to
exchange such capital stock with CSC Holdings for capital stock of Cablevision;

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto agree as
follows:

         1. CERTAIN DEFINITIONS. For the purposes of this Agreement, the
following terms shall have the following meanings:

         "AFFILIATE" and "ASSOCIATE" when used with reference to any Person
shall have the meanings assigned to such terms in Rule 12b-2 of the Exchange Act
as in effect of the date hereof; PROVIDED, that Cablevision and its Subsidiaries
and the officers and directors of Cablevision and its Subsidiaries shall not,
solely as a result of holding such office of Cablevision or any of

<PAGE>

its Subsidiaries, be deemed Affiliates or Associates of NBC- Rainbow for
purposes of this Agreement.

         A Person shall be deemed the "BENEFICIAL OWNER", and to have
"BENEFICIAL OWNERSHIP" of, and to "BENEFICIALLY OWN," any securities as to which
such Person is or may be deemed to be the beneficial owner pursuant to Rule
13d-3 and 13d-5 under the Exchange Act, as such rules are in effect on the date
of this Agreement, as well as any securities as to which such Person has the
right to become Beneficial Owner (whether such right is exercisable immediately
or only after the passage of time or the occurrence of conditions) pursuant to
any agreement, arrangement or understanding (other than customary agreements
with and between underwriters and selling group members with respect to a BONA
FIDE public offering of securities), or upon the exercise of conversion rights,
exchange rights, rights, warrants or options, or otherwise; PROVIDED, HOWEVER,
that no Person shall be deemed the "Beneficial Owner" or to have "Beneficial
Ownership" of, or to "Beneficially Own," any Shares solely by virtue of the
rights set forth in Section 8 hereof; and PROVIDED, FURTHER, that a Person shall
not be deemed the "Beneficial Owner", or to have "Beneficial Ownership" of, or
to "Beneficially Own", any Shares (i) solely because such Shares have been
tendered pursuant to a tender or exchange offer made by such Person, or any of
such Person's Affiliates or Associates, until such tendered Shares are accepted
for payment or exchange or (ii) solely because such Person, or any of such
Person's Affiliates or Associates, has or shares the power to vote or direct the
voting of such Shares pursuant to a revocable proxy given in response to a
public proxy or consent solicitation made pursuant to, and in accordance with,
the applicable rules and regulations under the Exchange Act, except if such
power (or the arrangements relating thereto) is then reportable under Item 6 of
Schedule 13D under the Exchange Act (or any similar provision of a comparable or
successor report). For purposes of this Agreement, in determining the percentage
of the outstanding Shares with respect to which a Person is the Beneficial
Owner, all Shares as to which such Person is deemed the Beneficial Owner shall
be deemed outstanding.

                                       -2-
<PAGE>

         "BOARD" shall mean the Board of Directors of Cablevision.

         "BUSINESS DAY" means a day other than a Saturday, Sunday, national or
New York State holiday or other day on which commercial banks in New York City
are authorized or required by law to close.

         "CABLEVISION CLASS A SHARES" shall mean collectively Cablevision NY
Group Class A Shares and Rainbow Media Group Class A Shares.

         "CABLEVISION NY GROUP CLASS A SHARES" shall mean shares of Cablevision
NY Group Class A Common Stock, par value $.01 per share (or such other class or
series of capital stock of Cablevision into which the Cablevision NY Group Class
A Common Stock, par value $.01 per share, has been converted).

         "CABLEVISION SHARES" shall mean any shares of capital stock of
Cablevision.

         "CHANGE OF CONTROL" shall mean, with respect to NBC-Rainbow, any
transaction or series of transactions pursuant to which any Person (other than
NBC or a wholly- owned subsidiary of NBC) becomes the Beneficial Owner of Voting
Securities of NBC-Rainbow that have the power to cast at least 50% of the votes
entitled to be cast in elections of directors (or similar officials) of
NBC-Rainbow.

         "CODE" shall mean the Internal Revenue Code of 1986, as amended.

         "CONTRACT" shall mean any agreement, lease, license, franchise, permit,
concession, contract, note, mortgage, indenture, arrangement or other
obligation.

         "CONTROLLED SUBSIDIARY" shall mean, with respect to any Person, a
Subsidiary at least a majority of the Voting Securities and other equity
interests of which are owned, directly or indirectly, by such Person.

         "DISPOSITION" means a sale or other disposition (whether by merger,
consolidation, sale or otherwise but

                                      -3-
<PAGE>

not in a financing transaction) to one or more persons or entities, in one
transaction or a series of related transaction.

         "DISTRIBUTION" shall mean the transaction by which Cablevision
distributes to its stockholders Rainbow Media Group Class A Shares and Rainbow
Media Group Class B Shares on a one-for-two basis and otherwise on the terms set
forth in the Proxy Statement.

         "EXCHANGE" has the meaning set forth in Section 4(a).

         "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, as
amended.

         "EXCHANGE RATE" has the meaning set forth in Section 4(a).

         "EXCHANGE TERMINATION DATE" shall mean the earlier of (i) December 31,
2009 and (ii) the Business Day prior to the happening of a Rainbow Media
Holdings Capital Transaction.

         "GOVERNMENTAL ENTITY" shall mean any governmental, regulatory or
self-regulatory (including a sports league) authority, agency, commission, body
or other governmental entity.

         "GROUP" shall have the meaning assigned to such term in Rule 13d-5
under the Exchange Act as in effect on the date hereof.

         "LAW" shall mean any federal, state, local or foreign law, statute,
ordinance, rule, regulation, judgment, order, injunction, decree, arbitration
award, agency requirement, franchise, license or permit of any Governmental
Entity.

         "LIEN" means any mortgage, pledge, lien, deed of trust, hypothecation,
claim, security interest, title defect, encumbrance, burden, tax lien (as used
in Section 6321 of the Code or similarly by any state, local or foreign tax
authority), charge or other similar

                                      -4-
<PAGE>

restriction, title retention agreement, option, easement, covenant, encroachment
or other adverse claim.

         "MINORITY SHARES" shall mean the Cablevision Class A Shares that are
Beneficially Owned by Minority Stockholders.

         "MINORITY STOCKHOLDERS" shall mean the Beneficial Owners of Cablevision
Class A Shares who (i) are not NBC- Rainbow or its Affiliates or Associates,
(ii) are not members of a Group of which NBC-Rainbow or its Affiliates or
Associates are members with respect to Cablevision Class A Shares, (iii) are not
owned by AT&T Corp. or its Affiliates or Associates, and (iv) are not members of
a Group of which AT&T Corp. or its Affiliates or Associates are members with
respect to Cablevision Class A Shares.

         "ORIGINAL BLOCK" shall mean 44,670,681 Rainbow Media Group Class A
Shares, as such amount may be adjusted to give effect to stock splits or
subdivisions, stock dividends or the like.

         "PERMITTED TRANSFEREE" shall mean a permitted transferee under Section
7(c).

         "PERSON" shall mean any individual, corporation (including
not-for-profit), general or limited partnership, limited liability company,
joint venture, estate, trust, association, organization, Governmental Entity or
other entity of any kind or nature.

         "PROXY STATEMENT" shall mean Cablevision's Definitive Proxy Statement
for the Special Meeting of Stockholders to be held to approve, among other
things, an amended and restated certificate of incorporation of Cablevision
necessary to permit the Distribution.

         "RAINBOW MEDIA GROUP" shall have the meaning given to such term from
time to time in Cablevision's Amended and Restated Certificate of Incorporation.

         "RAINBOW MEDIA GROUP CLASS A SHARES" shall mean shares of Cablevision's
Rainbow Media Group Class A Common Stock, par value $.01 per share (or such
other

                                      -5-
<PAGE>

class or series of capital stock of Cablevision into which the Rainbow Media
Group Class A Common Stock, par value $.01 per share, has been converted).

         "RAINBOW MEDIA HOLDINGS CAPITAL TRANSACTION" shall mean the occurrence
of any of the following events:

                  (i) the Disposition of all or substantially all of the assets
         of the Rainbow Media Group, directly or indirectly, including by the
         sale, assignment, transfer or other disposition of the capital stock of
         Rainbow Media Holdings or the merger of Rainbow Media Holdings with or
         into another Person (that is not a wholly-owned Subsidiary of Rainbow
         Media Holdings or Cablevision), followed in each case by a distribution
         to Rainbow Media Holdings stockholders; and

                  (ii) a spin-off of the Rainbow Media Group or Rainbow Media
         Holdings, in either case in its entirety, to Cablevision stockholders.

         "RAINBOW MEDIA HOLDINGS CLASS A SHARES" shall mean shares of Rainbow
Media Holdings Class A Common Stock, par value $.01 per share (or such other
class or series of capital stock of Rainbow Media Holdings into which the
Rainbow Media Holdings Class A Common Stock, par value $.01 per share, has been
converted).

         "RAINBOW MEDIA HOLDINGS SHARES" shall mean any shares of capital stock
of Rainbow Media Holdings.

         "SECURITIES ACT" shall mean the Securities Act of 1933, as amended.

         "SHARES" shall mean, collectively, Cablevision Shares and Rainbow Media
Holdings Shares.

         "SUBSIDIARY" shall mean, with respect to any Person, any entity at
least 50% of the Voting Securities of which are owned directly or indirectly by
such Person.

         "TRANSFER" shall mean (i) any direct or indirect sale, transfer,
assignment, pledge, hypothecation, mortgage, or other disposition or
encumbrance, including

                                      -6-
<PAGE>

those by operation or succession of law, merger or otherwise, and (ii) with
respect to any Shares that are Beneficially Owned by NBC-Rainbow, any Change of
Control of NBC-Rainbow.

         "ULTIMATE PARENT ENTITY" shall mean, with respect to any Person that is
a Subsidiary of a Person, the Person that, directly or indirectly, Beneficially
Owns at least 50% of the Voting Securities of such Subsidiary and is not a
Subsidiary of any Person who is not a natural person.

         "VOTING SECURITIES" shall mean any securities entitled to vote in the
ordinary course in the election of directors or of Persons serving in a similar
governing capacity of any partnership, limited liability company or other
entity, including the voting rights attached to such securities.

         2. REPRESENTATIONS OF NBC-RAINBOW. As of the date of this Agreement,
each of NBC and NBC-Rainbow represents and warrants to Cablevision and CSC
Holdings that:

         (a) each of NBC and NBC-Rainbow has all requisite corporate power and
authority and has taken all corporate action necessary in order to execute and
deliver this Agreement;

         (b) this Agreement has been duly executed and delivered by each of NBC
and NBC-Rainbow and is a valid and binding agreement of each of NBC and
NBC-Rainbow enforceable against NBC and NBC-Rainbow in accordance with its
terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors' rights and to general equity principles;

         (c) no notices, reports or other filings are required to be made by NBC
or NBC-Rainbow with, nor are any consents, registrations, approvals, permits or
author izations required to be obtained by NBC or NBC-Rainbow from, any
Governmental Entity, in connection with the execution and delivery of this
Agreement by NBC and

                                      -7-
<PAGE>

NBC-Rainbow, except those that have been made or obtained or that the failure to
make or obtain are not, individually or in the aggregate, reasonably likely to
prevent, materially delay or materially impair the ability of NBC and
NBC-Rainbow to consummate the transactions contemplated by this Agreement; and

         (d) the execution, delivery and performance of this Agreement by NBC
and NBC-Rainbow do not, and the consummation by NBC and NBC-Rainbow of the
transactions contemplated hereby will not, constitute or result in (i) a breach
or violation of, or a default under, the certificate of incorporation or by-laws
of either NBC or NBC-Rainbow, (ii) a breach of or violation of or a default
under, or the acceleration of any obligations of or the creation of a Lien on
the assets of NBC or NBC-Rainbow (with or without notice, lapse of time or both)
pursuant to, any Contracts binding upon NBC or NBC-Rainbow or any Law or
governmental or non- governmental permit or license to which NBC or NBC-Rainbow
is subject or (iii) any change in the rights or obligations of any party under
any of such Contracts to which NBC or NBC-Rainbow is a party, except, in the
case of clause (ii) or (iii) above, for any breach, violation, default,
acceleration, creation or change that, individually or in the aggregate, is not
reasonably likely to prevent, materially delay or materially impair the ability
of NBC and NBC-Rainbow to consummate the transactions contemplated by this
Agreement.

         3. REPRESENTATIONS OF CABLEVISION AND CSC HOLDINGS. As of the date of
this Agreement, each of Cablevision and CSC Holdings represents and warrants to
NBC and NBC-Rainbow that:

         (a) each of Cablevision and CSC Holdings has all requisite corporate
power and authority and has taken all corporate action necessary in order to
execute and deliver this Agreement;

         (b) this Agreement has been duly executed and delivered by each of
Cablevision and CSC Holdings and is a valid and binding agreement of each of
Cablevision and CSC Holdings enforceable against Cablevision and CSC Holdings in
accordance with its terms, subject to

                                      -8-
<PAGE>

bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors' rights
and to general equity principles;

         (c) no notices, reports or other filings are required to be made by
Cablevision or CSC Holdings with, nor are any consents, registrations,
approvals, permits or authorizations required to be obtained by Cablevision or
CSC Holdings from, any Governmental Entity, in connection with the execution and
delivery of this Agreement by Cablevision and CSC Holdings, except those that
have been made or obtained or that the failure to make or obtain are not,
individually or in the aggregate, reasonably likely to prevent, materially delay
or materially impair the ability of Cablevision or CSC Holdings to consummate
the transactions contemplated by this Agreement;

         (d) the execution, delivery and performance of this Agreement by
Cablevision and CSC Holdings do not, and the consummation by Cablevision and CSC
Holdings of the transactions contemplated hereby will not, constitute or result
in (i) a breach or violation of, or a default under, the certificate of
incorporation or by-laws of Cablevision or CSC Holdings, (ii) a breach of or
violation of or a default under, or the acceleration of any obligations of or
the creation of a Lien on the assets of Cablevision or CSC Holdings (with or
without notice, lapse of time or both) pursuant to, any Contracts binding upon
Cablevision or CSC Holdings or any Law or governmental or non-governmental
permit or license to which Cablevision or CSC Holdings is subject or (iii) any
change in the rights or obligations of any party under any of such Contracts to
which Cablevision or CSC Holdings is a party, except, in the case of clause (ii)
or (iii) above, for any breach, violation, default, acceleration, creation or
change that, individually or in the aggregate, is not reasonably likely to
prevent, materially delay or materially impair the ability of Cablevision and
CSC Holdings to consummate the transactions contemplated by this Agreement; and

         (e) As of September 30, 2000, the authorized capitalization of
Cablevision consisted of (i)

                                      -9-
<PAGE>

400,000,000 shares of Class A common stock, par value $0.01 per share, (ii)
160,000,000 shares of Class B common stock, par value $0.01 per share, and (iii)
10,000,000 shares of preferred stock, par value $0.01 per share. Following the
filing of the amended and restated certificate of incorporation of Cablevision,
in the form attached to the Proxy Statement, the authorized capitalization of
Cablevision will consist of (A) 1,400,000,000 Cablevision Class A Shares,
800,000,000 of which will be designated Cablevision NY Group Class A shares and
600,000,000 of which will be designated Rainbow Media Group Class A Shares, (B)
480,000,000 shares of Class B common stock, par value $0.01 per share,
320,000,000 of which will be designated Cablevision NY Group Class B common
stock, par value $0.01 per share, and 160,000,000 shares of which will be
designated Rainbow Media Group Class B common stock, par value $0.01 per share,
and (C) 50,000,000 of preferred stock, par value $0.01 per share. As of
September 30, 2000, 132,326,581 shares of Class A common stock, par value $0.01
per share, and 42,154,536 shares of Class B common stock, par value $0.01 per
share, were issued and outstanding. As of the close of business on September 30,
2000, there were outstanding options to acquire no more than 6,347,199
Cablevision Shares (not including options yet to be granted that will have an
effective issuance date prior to September 30, 2000). Except as disclosed in
Cablevision's reports, statements, schedules or registration statements filed
with the Securities and Exchange Commission pursuant to the Securities Exchange
Act of 1934, as amended, there are no other options or rights to acquire
Cablevision Shares and there are no other securities of Cablevision convertible
into or exchangeable for Cablevision Shares.

         4. EXCHANGE PROVISIONS.

         (a) EXCHANGE OF RAINBOW MEDIA HOLDINGS CLASS A SHARES FOR RAINBOW MEDIA
GROUP CLASS A SHARES AT NBC- RAINBOW'S ELECTION. Subject to the terms and
conditions hereof, on or prior to the Exchange Termination Date one time during
each calendar quarter on any Business Day during the last month of such calendar
quarter, CSC Holdings hereby agrees to exchange (each, an "EXCHANGE") with
NBC-Rainbow at NBC-Rainbow's election any number of

                                      -10-
<PAGE>

the Rainbow Media Holdings Class A Shares Beneficially Owned by NBC-Rainbow and
identified by NBC-Rainbow to CSC Holdings for Rainbow Media Group Class A
Shares, each such Rainbow Media Holdings Class A Share being exchanged for
16,868 Rainbow Media Group Class A Shares (the "EXCHANGE RATE"), subject to
adjustment and readjustment as set forth in Section 4(e) below.

         (b) EXCHANGE OF RAINBOW MEDIA HOLDINGS CLASS A SHARES FOR RAINBOW MEDIA
GROUP CLASS A SHARES ON THE EXCHANGE TERMINATION DATE. Subject to the terms and
conditions hereof, if not already Exchanged, on the Exchange Termination Date,
NBC-Rainbow shall Exchange with CSC Holdings and CSC Holdings shall exchange
with NBC-Rainbow each Rainbow Media Holdings Class A Share Beneficially Owned by
NBC-Rainbow at the Exchange Rate, subject to adjustment and readjustment as set
forth in Section 4(e) below.

         (c) NOTIFICATION OF RAINBOW MEDIA HOLDINGS CAPITAL TRANSACTION.
Cablevision shall notify NBC-Rainbow of its intent to consummate a Rainbow Media
Holdings Capital Transaction at or prior to its first public announcement of its
intent to consummate such a transaction and at least 30 days prior to such
consummation.

         (d) EXCHANGE PROCEDURES. Subject to the terms and conditions hereof,
NBC-Rainbow may make an Exchange one time during each quarter on any Business
Day during the last month of such calendar quarter at any time during normal
business hours but not after 5:00 P.M., New York City time, on the Exchange
Termination Date by (i) delivery of a written notice in the form of the Exchange
Notice attached hereto as EXHIBIT A, which notice shall specify the number of
Rainbow Media Holdings Class A Shares to be Exchanged and the number of Rainbow
Media Group Class A Shares to be received upon Exchange and (ii) the surrender
of the number of Rainbow Media Holdings Class A Shares specified in the Exchange
Notice, properly endorsed, at the principal office of CSC Holdings (or at such
other agency or office of CSC Holdings as CSC Holdings may designate to
NBC-Rainbow). In the event of any Exchange, a certificate or certificates for
the Rainbow Media Group Class A Shares

                                      -11-
<PAGE>

to be issued, registered in the name of NBC-Rainbow, shall be delivered to
NBC-Rainbow at the address set forth in Section 11(c) hereof within a reasonable
time, not exceeding 30 days, after the Exchange Notice for such exchange and the
other item to be delivered pursuant to clause (ii) of this paragraph has been
received by CSC Holdings. Upon proper completion of the Exchange Notice attached
hereto as EXHIBIT A and delivery of the other item to be delivered pursuant to
clause (ii) of this paragraph, NBC-Rainbow shall for all purposes be deemed to
have become the holder of the number of Rainbow Media Group Class A Shares to be
issued immediately prior to the close of business on the date of the Exchange
Notice, irrespective of the date of delivery of such share certificate, except
that, if the date of such surrender and payment is a date when the stock
transfer books of Cablevision are properly closed, such person shall be deemed
to have become the holder of such Rainbow Media Group Class A Shares at the
opening of business on the next succeeding date on which the stock transfer
books are open. In the event that less than all of the Rainbow Media Group Class
A Shares represented by a certificate are exchanged, a new certificate for
Rainbow Media Group Class A Shares shall be issued to NBC-Rainbow representing
the unexchanged shares.

         (e) ADJUSTMENTS. The number and kind of Rainbow Media Group Class A
Shares issuable upon any Exchange (or any shares of stock or other securities or
property at the time issuable upon Exchange), are subject to adjustment as
follows:

                  (i) ADJUSTMENT FOR STOCK SPLITS, STOCK SUBDIVISIONS OR
         COMBINATIONS OF SHARES. The Exchange Rate shall be proportionally
         decreased to reflect any stock split or subdivision of the Rainbow
         Media Holdings Class A Shares (or any shares of stock or other
         securities that at the time could be Exchanged) and the Exchange Rate
         shall be proportionally increased to reflect any stock split or
         subdivision of Rainbow Media Group Class A

                                      -12-
<PAGE>

         Shares (or any shares of stock or other securities at the time issuable
         upon Exchange). The Exchange Rate shall be proportionally increased to
         reflect any combination of the Rainbow Media Holdings Class A Shares
         (or any shares of stock or other securities that at the time could be
         Exchanged) into a smaller number of shares and the Exchange Rate shall
         be proportionally decreased to reflect any combination of Rainbow Media
         Group Class A Shares (or any shares of stock or other securities at the
         time issuable upon Exchange) into a smaller number of shares.

             (ii) ADJUSTMENT FOR REORGANIZATION, CONSOLIDATION, MERGER OF
         CABLEVISION. In case of any reorganization of Cablevision (or of any
         other corporation, the stock or other securities of which are at the
         time issuable upon Exchange) or in case Cablevision (or any such
         corporation) shall consolidate with or merge into another corporation
         or convey all or substantially all of its assets to another corporation
         or other entity, then, and in each such case, NBC-Rainbow, upon any
         permitted Exchange (as provided in Section 4(a)), at any time after the
         consummation of such reorganization, consolidation, merger or
         conveyance, shall be entitled to receive, in lieu of the stock or other
         securities and property issuable upon Exchange prior to such
         consummation, the stock or other securities or property to which
         NBC-Rainbow would have been entitled upon the consummation of such
         reorganization, consolidation, merger or conveyance if NBC-Rainbow had
         Exchanged immediately prior thereto, all subject to further adjustment
         as provided in this Section 4(e), and the successor or purchasing
         corporation or other entity in such reorganization, consolidation,
         merger or conveyance (if other than Cablevision) shall duly execute and
         deliver to NBC-Rainbow a supplement hereto acknowledging such
         corporation's or entity's obligations hereunder prior to the
         consummation of such reorganization, consolidation, merger or
         conveyance; and in each such case, the terms of this Agreement
         (including, the standstill, transfer and voting provisions hereof)
         shall be applicable to the shares of stock or other securities or
         property issuable upon Exchange after the consummation of such
         reorganization, consolidation, merger or conveyance. The foregoing
         provisions of this Section 4(e)(ii) shall similarly apply to successive

                                      -13-
<PAGE>

         reorganizations, consolidations, mergers, sales and transfers and to
         the stock or securities of any other corporation that are at the time
         issuable upon Exchange. If the per share consideration payable to
         holders of Rainbow Media Group Class A Shares in connection with any
         such transaction is in a form other than cash or marketable securities,
         then the value of such consideration shall be determined in good faith
         by the Board. In all events, appropriate adjustment (as determined in
         good faith by the Board) shall be made in the application of the
         provisions of this Section 4, including the Exchange Rate, with respect
         to the rights and interests of NBC- Rainbow after the transaction, to
         the end that the provisions hereof shall be applicable after that
         event, as near as reasonably may be, in relation to any shares or other
         property deliverable after that event upon Exchange.

                  (iii) ADJUSTMENT FOR REORGANIZATION, CONSOLIDATION, MERGER OF
         RAINBOW MEDIA HOLDINGS. In case of any reorganization of Rainbow Media
         Holdings (or of any other corporation, the stock or other securities of
         which may be Exchanged) or in case Rainbow Media Holdings (or any such
         corporation) shall consolidate with or merge into another corporation
         or convey all or substantially all of its assets to another corporation
         or other entity in any transaction that is not a Rainbow Media Holdings
         Capital Transaction, then, and in each such case, NBC-Rainbow, upon any
         permitted Exchange at any time after the consummation of such
         reorganization, consolidation, merger or conveyance, shall be entitled
         to deliver for Exchange pursuant to Section 4(a), in lieu of the
         Rainbow Media Holdings Class A Shares or other stock or securities and
         property deliverable for Exchange prior to such consummation, the stock
         or other securities or property that NBC-Rainbow receives upon
         consummation of such reorganization, consolidation, merger or
         conveyance, all subject to further adjustment as provided in this
         Section 4(e). The foregoing provisions of this Section 4(e)(iii) shall
         similarly apply to successive reorganizations, consolidations, mergers,
         sales and transfers that do not constitute a Rainbow

                                      -14-
<PAGE>

         Media Holdings Capital Transaction and to the stock or securities of
         any other corporation that are at the time deliverable for Exchange. If
         the per share consideration payable to holders of Rainbow Media
         Holdings Class A Shares in connection with any such transaction is in a
         form other than cash or marketable securities, then the value of such
         consideration shall be determined in good faith by the Rainbow Media
         Holdings Board of Directors. In all events, appropriate adjustment (as
         determined in good faith by the Rainbow Media Holdings Board of
         Directors) shall be made in the application of the provisions of this
         Section 4, including the Exchange Rate, with respect to the rights and
         interests of NBC-Rainbow after the transaction, to the end that the
         provisions hereof shall be applicable after that event, as near as
         reasonably may be, in relation to any shares or other property
         deliverable after that event upon Exchange.

                  (iv) ADJUSTMENT FOR EXCHANGE OF RAINBOW MEDIA GROUP CLASS A
         SHARES FOR CABLEVISION NY GROUP CLASS A SHARES. In case of any exchange
         of Rainbow Media Group Class A Shares for Cablevision NY Group Class A
         Shares in accordance with Section VII(a)(iii) or VII(b) of the Amended
         and Restated Certificate of Incorporation of Cablevision, then the
         Exchange Rate shall be adjusted such that NBC-Rainbow, upon any
         permitted Exchange shall be entitled to receive, in lieu of the Rainbow
         Media Group Class A Shares issuable upon Exchange prior to such
         exchange, the number of Cablevision NY Group Class A Shares (as they
         may be redesignated as a result thereof) to which NBC-Rainbow would
         have been entitled upon the exchange in accordance with Section VII
         (a)(iii) or VII(b) of the Amended and Restated Certificate of
         Incorporation of Cablevision if NBC- Rainbow had Exchanged immediately
         prior thereto, all subject to further adjustment as provided in this
         Section 4(e); and in each such case, the terms of this Agreement
         (including, the standstill, transfer and voting provisions hereof)
         shall be applicable to the Cablevision NY Group Class A Shares issuable
         upon Exchange.

                                      -15-
<PAGE>

                  (v) ADJUSTMENT FOR DIVIDENDS OR DISTRIBUTIONS OF STOCK OR
         OTHER SECURITIES OR PROPERTY. In case Cablevision shall make or issue,
         or shall fix a record date for the determination of eligible
         stockholders entitled to receive, a dividend or other distribution with
         respect to the Rainbow Media Group Class A Shares (or any shares of
         stock or other securities at the time issuable upon Exchange) payable
         in (a) securities of Cablevision or (b) assets (excluding cash
         dividends), then, in each such case, on Exchange at any time after the
         record date of such dividend or other distribution, NBC-Rainbow shall
         receive, in addition to the Rainbow Media Group Class A Shares (or such
         other stock or securities) issuable on such Exchange prior to such
         date, and without the payment of additional consideration therefor, the
         securities or such other assets to which NBC-Rainbow would have been
         entitled upon such date if NBC-Rainbow had Exchanged prior to such
         issuance or record date and had thereafter, during the period from such
         issuance or record date to and including the date of such Exchange,
         retained such shares and/or all other additional stock available by it
         as aforesaid during such period giving effect to all adjustments called
         for by this Section 4(e) (and Cablevision shall place such securities
         or other assets into escrow until receipt by NBC-Rainbow).

                  (vi) RECLASSIFICATIONS. If Cablevision by reclassification of
         securities or otherwise, shall change any of the securities as to which
         exchange rights hereunder exist into the same or a different number of
         securities of any other class or classes, the Exchange right hereunder
         shall thereafter represent the right to acquire such number and kind of
         securities as would have been issuable as the result of such change
         with respect to the securities that were subject to the Exchange rights
         hereunder immediately prior to such reclassification or other change,
         all subject to further adjustment as provided in this Section 4(e).

         (f) It is intended that any or all of the exchange of NBC-Rainbow's
interest in Rainbow Media

                                      -16-
<PAGE>

Holdings Class A Shares for Rainbow Media Group Class A Shares, as provided in
this Section 4, qualify as a reorganization within the meaning of Section 368(a)
of the Code and that this Agreement qualify as a plan of reorganization within
the meaning of Section 1.368-1(c) of the Treasury Regulations.

         5. COVENANTS OF CABLEVISION. (a) Cablevision covenants and agrees to
cause CSC Holdings to perform its obligations under Section 4. Cablevision
further covenants and agrees that all Rainbow Media Group Class A Shares that
may be issued upon Exchange will, upon issuance, be validly issued, fully paid
and nonassessable by Cablevision, free of preemptive rights and free from all
taxes, liens, charges and security interests with respect to the issue thereof.
Cablevision further covenants and agrees that until the Exchange Termination
Date, it will at all times have authorized and reserved a sufficient number of
Rainbow Media Group Class A Shares to provide for any Exchanges hereunder, and
will ensure that CSC Holdings holds a sufficient number of Rainbow Media Group
Class A Shares at the time of any Exchange hereunder to effect any such
Exchange.

         (b) Cablevision agrees that it will not, nor will it permit any of its
Subsidiaries to, take any of the following actions if such actions would
preclude any or all of the exchange of NBC-Rainbow Holding's interest in Rainbow
Media Holdings for Rainbow Media Group Class A Shares from qualifying as a
reorganization under Section 368(a) of the Code:

                  (i) any action that would result in Cablevision, or a directly
         owned Subsidiary of Cablevision that Cablevision "controls" (within the
         meaning of Section 368(c) of the Code), not being in "control" (within
         the meaning of Section 368(c) of the Code) of Rainbow Media Holdings;

                  (ii) any action that would cause the Rainbow Media Group Class
         A Shares to fail to qualify as voting stock of Cablevision within the
         meaning of Section 368 of the Code;

                                      -17-
<PAGE>

                  (iii) any action that would cause Rainbow Media Holdings not
         to continue its historic business or use a significant portion of its
         historic assets in a business;

                  (iv) any action that would cause either Cablevision, Rainbow
         Media Holdings or any directly owned subsidiary of Cablevision that
         "controls" (within the meaning of Section 368(c) of the Code) Rainbow
         Media Holdings to be treated as an investment company as defined in
         Section 368(a)(2)(F)(iii) and (iv) of the Code; or

                  (v) any action that would cause the sum of Rainbow Media
         Holdings liabilities, plus the liabilities, if any, to which its assets
         are subject, to equal or exceed the fair market value of its assets.

Notwithstanding the foregoing, the tax covenants set forth above shall not in
any way limit the ability of Cablevision or any of its Subsidiaries from, and
Cablevision shall not have any obligation to indemnify NBC-Rainbow Holding or
any of its affiliates as a result of:

                  (1) the consummation of a Rainbow Media Holdings Capital
         Transaction;

                  (2) the consummation of any of the transactions contemplated
         by this Agreement or the Proxy Statement relating to the Distribution;

                  (3) the spin-off of Rainbow Media Holdings in its entirety by
         CSC Holdings to Cablevision; or

                  (4) the consummation of a Disposition of all or substantially
         all of the assets, directly or indirectly, including by acquisition of
         capital stock or merger, of Cablevision or Rainbow Media Holdings;

even if, in any case, such action would preclude any or all of the exchange of
NBC-Rainbow Holding's interest in Rainbow Media Holdings for Rainbow Media Group
Class A

                                      -18-
<PAGE>

Shares from qualifying as a reorganization under Section 368(a) of the Code.

         Cablevision agrees that it will not, nor will it permit any of its
Subsidiaries to, take any position on any tax return or other filing, or during
the course of any audit, that is inconsistent with the Exchange qualifying as a
reorganization under Section 368(a) of the Code, except as the parties shall
mutually agree or otherwise required by law.

         6. STANDSTILL PROVISIONS. Without the consent of Cablevision, which may
be granted or withheld in Cablevision's sole and absolute discretion, NBC and
NBC- Rainbow shall not, and shall not suffer or permit any of their respective
Affiliates or Associates to (whether acting alone or in concert with others):

                  (a) form, join or participate in, or encourage the formation
         of, a Group with respect to any Shares;

                  (b) except upon exercise of NBC-Rainbow's rights set forth in
         Section 4, purchase or otherwise acquire Beneficial Ownership of or
         otherwise Beneficially Own any Shares other than Shares Beneficially
         Owned on the date hereof; or

                  (c) advise, assist (including by knowingly providing or
         arranging financing for that purpose) or knowingly encourage, induce or
         attempt to encourage or induce any other Person to take any actions
         referred to in the foregoing paragraphs (a) and (b).

         7. SHARE TRANSFERS.

         (a) Without the consent of Cablevision, which may be granted or
withheld in Cablevision's sole and absolute discretion, except pursuant to
Section 4 hereof, NBC-Rainbow shall not Transfer, in any single transaction or
group of related transactions, any Rainbow Media Holdings Shares that are
Beneficially Owned by NBC-Rainbow except for a Transfer (A) of all (but not less
than all) of such Rainbow Media Holdings Shares to any

                                      -19-
<PAGE>

Controlled Subsidiary of NBC or (B) of all or any of such Rainbow Media Holdings
Shares to a Subsidiary all of the Voting Securities and all of the equity
securities of which are Beneficially Owned, directly or indirectly, by NBC;
PROVIDED, that contemporaneously with any such Transfer such Controlled
Subsidiary or wholly owned Subsidiary, as the case may be, becomes a party to a
counterpart of this Agreement and NBC guarantees the performance of all
obligations of such Controlled Subsidiary or wholly owned Subsidiary, as the
case may be, under this Agreement; PROVIDED, FURTHER, that such Controlled
Subsidiary or wholly owned Subsidiary, as the case may be, and NBC shall prior
to such Transfer covenant and agree with Cablevision that, for so long as the
Controlled Subsidiary or wholly owned Subsidiary, as the case may be,
Beneficially Owns such Cablevision Shares, it shall continue to be a Controlled
Subsidiary or wholly owned Subsidiary, as the case may be, of NBC.

         (b) For a period of 12 months following the date of the Distribution,
NBC-Rainbow shall not Transfer, in any single transaction or group of related
transactions, any Rainbow Media Group Class A Shares that are Beneficially Owned
by NBC-Rainbow, except for a Transfer (A) of all (but not less than all) of such
Rainbow Media Group Class A Shares to any Controlled Subsidiary of NBC or (B) of
all or any of such Rainbow Media Group Class A Shares to a Subsidiary all of the
Voting Securities and all of the equity securities of which are Beneficially
Owned, directly or indirectly, by NBC; PROVIDED, that contemporaneously with any
such Transfer such Controlled Subsidiary or wholly owned Subsidiary, as the case
may be, becomes a party to a counterpart of this Agreement and NBC guarantees
the performance of all obligations of such Controlled Subsidiary or wholly owned
Subsidiary, as the case may be, under this Agreement; PROVIDED, FURTHER, that
such Controlled Subsidiary or wholly owned Subsidiary, as the case may be, and
NBC shall prior to such Transfer covenant and agree with Cablevision that, for
so long as the Controlled Subsidiary or wholly owned Subsidiary, as the case may
be, Beneficially Owns such Rainbow Media Group Class A Shares, it shall continue
to be a

                                      -20-
<PAGE>

Controlled Subsidiary or wholly owned Subsidiary, as the case may be, of NBC.

         (c) After such 12-month period following the Distribution has elapsed,
NBC-Rainbow shall be entitled to transfer Rainbow Media Group Class A Shares to
any Person (a "PERMITTED TRANSFEREE") after complying with the provisions of
Section 8 to the extent applicable, PROVIDED, that such Person causes to be
delivered to Cablevision an opinion of counsel experienced in such matters to
the effect that such transfer may be effected without registration under the
Securities Act, PROVIDED, that in the following circumstances a transferee of
NBC-Rainbow's Rainbow Media Group Class A Shares shall become a party to a
counterpart of this Agreement as NBC-Rainbow (whereupon, subject to Section
11(f), any reference to NBC-Rainbow herein shall be deemed to be a reference to
such Person):

                  (i) any Person acquiring directly from NBC- Rainbow, in a
         single transaction or a series of related transactions, more than 10%
         of NBC-Rainbow's Original Block unless such Person is acquiring such
         Rainbow Media Group Class A Shares with a view to, or for resale in
         connection with, the distribution thereof as evidenced by a certificate
         delivered to Cablevision from such Person; and

                  (ii) any Person acquiring Rainbow Media Group Class A Shares
         directly from NBC-Rainbow that, to the knowledge of NBC or NBC-Rainbow,
         would own more than 50% of NBC-Rainbow's Original Block as a result of
         such transfer from NBC-Rainbow unless such Person is acquiring such
         Rainbow Media Group Class A Shares with a view to, or for resale in
         connection with, the distribution thereof as evidenced by a certificate
         delivered to Cablevision from such Person.

                                      -21-
<PAGE>

         8. CABLEVISION'S RIGHT OF FIRST REFUSAL. NBC, NBC-Rainbow and
Cablevision hereby agree with each other that Cablevision shall be entitled to
the rights and NBC- Rainbow and NBC shall be subject to the respective
obligations set forth in this Section:

         (a) NOTICE. If at any time NBC-Rainbow desires to Transfer more than
10% of NBC-Rainbow's Original Block (in a transaction or series of
transactions), unless the transferee thereof is acquiring such Rainbow Media
Group Class A Shares with a view to, or for resale in connection with, any
distribution thereof, as evidenced by a certificate delivered to Cablevision by
such transferee, NBC-Rainbow shall first notify Cablevision in writing (an "NBC
OFFER NOTICE") of the possibility of such a transaction, the number of Rainbow
Media Group Class A Shares proposed to be Transferred and the aggregate number
of and a description of the Rainbow Media Group Class A Shares that are
Beneficially Owned by NBC-Rainbow and shall offer Cablevision the exclusive
right to purchase such Rainbow Media Group Class A Shares on the same terms as
set forth in the NBC Offer Notice.

         (b) RIGHT OF FIRST REFUSAL. Following Cablevision's receipt of an NBC
Offer Notice, for a period of 30 days after Cablevision's receipt of the NBC
Offer Notice (or such shorter period if Cablevision responds in writing that it
is not interested in pursuing such a transaction), Cablevision shall have the
exclusive right to purchase such Rainbow Media Group Class A Shares from NBC-
Rainbow on the terms set forth in the NBC Offer Notice, but Cablevision shall
not be obligated to do so. Cablevision agrees to keep confidential the fact that
NBC-Rainbow is considering effecting such a transaction, the possible terms
thereof and any confidential information obtained by Cablevision in pursuing
negotiations contemplated by this Section. If Cablevision does not purchase the
Rainbow Media Group Class A Shares referred to in NBC Offer Notice within such
30-day or shorter period, then NBC-Rainbow may, within 90 days after the NBC
Offer Notice is given, Transfer the Rainbow Media Group Class A Shares pursuant
to Section 7(c) at a price not less than the price, and on other terms no more
favorable to the third party than those, contained in the NBC Offer Notice. If
the Rainbow

                                      -22-
<PAGE>

Media Group Class A Shares referred to in the NBC Offer Notice are not so
disposed of within such 90-day period, then NBC-Rainbow shall, before making a
Transfer pursuant to Section 7(c) again be obligated to offer the right of first
refusal contained in this Section 8 to Cablevision.

         9. VOTING AGREEMENT WITH RESPECT TO CABLEVISION SHARES. NBC-Rainbow
shall vote or grant consent with respect to, and shall cause to be voted or to
be granted any consents with respect to, all Voting Securities of Cablevision
(including Rainbow Media Group Class A Shares) that are Beneficially Owned by
NBC-Rainbow on all matters submitted to the holders of Voting Securities of
Cablevision, other than the election of directors, in direct proportion to the
votes or consents of the Minority Shares on any such matter. NBC-Rainbow shall
cause all Cablevision Shares owned by it and its Affiliates and Associates
(including Rainbow Media Group Class A Shares), to be represented, in person or
by proxy, at all meetings of holders of Cablevision Shares of which NBC-Rainbow
has actual notice, so that all of such Cablevision Shares may be counted for the
purpose of determining the presence of a quorum at such meetings.

         10. LEGENDS. (a) NBC-Rainbow agrees that all certificates representing
any Shares that are from time to time subject to this Agreement shall bear the
following legend:

         "THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A
         STOCKHOLDERS' AGREEMENT (A COPY OF WHICH IS ON FILE WITH THE SECRETARY
         OF THE CORPORATION) WHICH PROVIDES, AMONG OTHER THINGS, FOR CERTAIN
         RESTRICTIONS ON THE TRANSFER AND VOTING THEREOF. THE SECURITIES
         REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD OR OTHERWISE
         TRANSFERRED EXCEPT IN COMPLIANCE WITH SAID AGREEMENT. ANY SALE OR OTHER
         TRANSFER NOT IN COMPLIANCE WITH SAID AGREEMENT SHALL BE VOID."

         (b) NBC-Rainbow agrees that all certificates representing the Shares
shall bear the following legend:

         "THE SECURITIES REPRESENTED BY THIS CERTIFICATE WERE SOLD WITHOUT
         REGISTRATION UNDER THE

                                      -23-
<PAGE>

         SECURITIES ACT OF 1933 AND MAY BE OFFERED OR SOLD ONLY IF REGISTERED
         UNDER THE SECURITIES ACT OF 1933 OR IF AN EXEMPTION FROM REGISTRATION
         IS AVAILABLE."

PROVIDED, that, with respect to Cablevision Shares, if NBC- Rainbow or any
transferee thereof delivers an opinion of counsel reasonably acceptable to
Cablevision to the effect that such legend is no longer required under the
Securities Act, such legend shall be removed.

         11. MISCELLANEOUS.

         (a) GOVERNING LAW. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE
PARTIES HERETO SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH AND SUBJECT
TO THE LAWS OF THE STATE OF DELAWARE.

         (b) VENUE; WAIVER OF JURY TRIAL. The parties hereby irrevocably submit
to the jurisdiction of the courts of the State of Delaware and the Federal court
of the United States of America located in the State of Delaware solely in
respect of the interpretation and enforcement of the provisions of this
Agreement and of the documents referred to in this Agreement, and in respect of
the transactions contemplated hereby, and hereby waive, and agree not to assert,
as a defense in any action, suit or proceeding for the interpretation or
enforcement hereof or of any such document, that it is not subject thereto or
that such action, suit or proceeding may not be brought or is not maintainable
in said courts or that the venue thereof may not be appropriate or that this
Agreement or any such document may not be enforced in or by such courts, and the
parties hereto irrevocably agree that all claims with respect to such action or
proceeding shall be heard and determined in such a Delaware State or Federal
court. The parties hereby consent to and grant any such court jurisdiction over
the person of such parties and over the subject matter of such dispute and agree
that mailing of process or other papers in connection with any such action or
proceeding in the manner provided in paragraph (c) of this Section or in such
other manner as may be permitted by law shall be valid and sufficient service
thereof.

                                      -24-
<PAGE>

         EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE
UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND
THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY
RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION
DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR THE
TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND
ACKNOWLEDGES THAT (i) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY
HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE
EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (ii) EACH PARTY
UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (iii) EACH PARTY
MAKES THIS WAIVER VOLUNTARILY, AND (iv) EACH PARTY HAS BEEN INDUCED TO ENTER
INTO THIS Agreement BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND
CERTIFICATIONS IN THIS PARAGRAPH (b).

         (c) NOTICES. All notices, requests, claims, demands and other
communications hereunder shall be in writing and shall be deemed given (i) on
the first business day following the date received, if delivered personally or
by telecopy (with telephonic confirmation of receipt by the addressee), (ii) on
the business day following timely deposit with an overnight courier service, if
sent by overnight courier specifying next day delivery and (iii) on the first
business day that is at least five days following deposit in the mails, if sent
by first class mail, to the parties at the following addresses (or at such other
address for a party as shall be specified by like notice):

         If to NBC or NBC-Rainbow, to:

                  30 Rockefeller Plaza
                  New York, New York 10112

                  Facsimile: (212) 664-0427

                  Attention: Chief Financial Officer

         with a copy to:

                  Law Department

                                      -25-
<PAGE>

                  30 Rockefeller Plaza
                  New York, New York 10112

                  Facsimile: (212) 977-7165

                  Attention: Vice President,
                  Corporate and Transactions Law

         If to Cablevision, to:

                  1111 Stewart Avenue
                  Bethpage, New York 11714
                           Facsimile:  (516) 803-1190

                           Attention:  General Counsel

                  with a copy to:

                           Sullivan & Cromwell
                           125 Broad Street
                           New York, New York 10004-2498

                           Facsimile:  (212) 558-3588

                           Attention:  John P. Mead, Esq.

         (d) EFFECTIVENESS; TERMINATION; SURVIVAL. This Agreement shall be
effective contemporaneously with the Distribution and no provision hereof shall
have any force and effect until such time. Immediately upon NBC-Rainbow,
together with all of the Affiliates of NBC-Rainbow, ceasing to Beneficially Own
any Shares, this Agreement (other than Sections 1, 2, 3 and 11) shall terminate
automatically without any action by any party and such terminated provisions of
this Agreement shall not survive such termination. This Section 11 and Sections
1, 2 and 3 shall survive any termination of all or any part of this Agreement
indefinitely.

                                      -26-
<PAGE>

         (e) SPECIFIC PERFORMANCE. Each party hereto acknowledges that it will
be impossible to measure in money the damage to the other party if a party
hereto fails to comply with any of the obligations imposed by this Agreement,
that every such obligation is material and that, in the event of any such
failure, the other party will not have an adequate remedy at law or damages.
Accordingly, each party hereto agrees that injunctive relief or other equitable
remedy, in addition to remedies at law or damages, is the appropriate remedy for
any such failure and will not oppose the granting of such relief on the basis
that the other party has an adequate remedy at law. Each party hereto agrees
that it shall not seek, and agrees to waive any requirement for, the securing or
posting of a bond in connection with any other party's seeking or obtaining such
equitable relief.

         (f) SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
permitted assigns and shall not be assignable except to the extent expressly
permitted hereby and any purported assignment in violation of this Agreement
shall be void. In the case of a merger or other business combination or
reorganization transaction involving Cablevision where securities other than
those of Cablevision are issued to the holders of Cablevision Shares, this
Agreement shall be assigned to and shall inure to the benefit of and be binding
upon the Person issuing securities in such transaction and any reference herein
to Cablevision shall be deemed to be a reference to such Person. Following any
spin-off of CSC Holdings' interest in Rainbow Media Holdings to Cablevision or
other transaction in which shares of capital stock of Rainbow Media Holdings
held by CSC Holdings are transferred to Cablevision, Cablevision shall succeed
to all of CSC Holdings' rights and obligations hereunder. NBC-Rainbow may assign
its rights and obligations under this Agreement to a Permitted Transferee
pursuant to Section 7(c), which assignment shall not terminate any obligations
of NBC and NBC-Rainbow hereunder; PROVIDED, that in the event of an assignment,
NBC and NBC- Rainbow agree with Cablevision that NBC-Rainbow and all
transferee(s) shall, with

                                      -27-
<PAGE>

respect to Cablevision, act as one investor under such assigned Sections.

         (g) ENTIRE AGREEMENT; AMENDMENT; WAIVER. This Agreement (including any
annexes and schedules hereto) supersede all prior agreements, written or oral
(including, without limitation, the Letter Agreement dated March 31, 1997),
among the parties hereto with respect to the subject matter hereof and contain
the entire agreement among the parties with respect to the subject matter
hereof. This Agreement may not be amended, supplemented or modified, and no
provisions hereof may be modified or waived, except by an instrument in writing
signed by the party or parties affected or to be affected thereby. No waiver of
any provisions hereof by any party shall be deemed a waiver of any other
provisions hereof by any such party, nor shall any such waiver be deemed a
continuing waiver of any provision hereof by such party.

         (h) NO LIMITATION ON CORPORATE ACTION. Subject to Cablevision's
covenants in Section 5 and the amended and restated certificates of
incorporation of Rainbow Media Holdings and Cablevision, as they may be amended
from time to time, no provisions of this Agreement and no right granted or
conferred to NBC or NBC-Rainbow hereunder shall in any way limit, affect or
abridge the exercise by Rainbow Media Holdings or Cablevision of any of their
respective corporate rights or powers to recapitalize, amend their respective
Certificates of Incorporation, reorganize, consolidate or merge with or into
another corporation, or to transfer all or any part of their respective
properties or assets, or the exercise of any other of their respective corporate
rights and powers.

         (j) NO RELIEF OF LIABILITIES. No Transfer by NBC-Rainbow of Beneficial
Ownership of any Shares shall relieve NBC or NBC-Rainbow of any liabilities or
obligations that arose or accrued prior to the date of such Transfer.

         (k) SECURITIES SUBJECT TO AGREEMENT; INEFFECTIVE TRANSFERS. All Shares
that are Beneficially Owned by NBC- Rainbow and, to the extent provided herein,

                                      -28-
<PAGE>

its Affiliates and Associates of NBC-Rainbow, shall be subject to this
Agreement. No Transfer or acquisition of any Shares in violation of any
provision of this Agreement shall be effective to pass any title to, or create
any interest in favor of, any Person, but NBC-Rainbow, in attempting to effect
or in permitting or suffering such Transfer or acquisition, shall be deemed to
have committed a material breach hereof.

         (l) FURTHER ASSURANCES. The parties hereto shall execute and deliver
such additional instruments and other documents and shall take such further
actions as may be necessary or appropriate to effectuate, carry out and comply
with all of the terms of this Agreement and the transactions contemplated
hereby.

         (m) THIRD PARTY BENEFICIARIES. NOTHING IN THIS AGREEMENT, EXPRESS OR
IMPLIED, IS INTENDED TO CONFER UPON ANY THIRD PARTY ANY RIGHTS OR REMEDIES OF
ANY NATURE WHATSOEVER UNDER OR BY REASON OF THIS AGREEMENT.

         (n) SEVERABILITY. The provisions of this Agreement shall be deemed
severable and the invalidity or unenforceability of any provision shall not
affect the validity or enforceability of the other provisions hereof. If any
provision of this Agreement, or the application thereof to any Person or any
circumstance, is invalid or unenforceable, (i) a suitable and equitable
provision shall be substituted therefor in order to carry out, so far as may be
valid and enforceable, the intent and purpose of such invalid or unenforceable
provision and (ii) the remainder of this Agreement and the application of such
provision to other Persons or circumstances shall not be affected by such
invalidity or unenforceability, nor shall such invalidity or unenforceability
affect the validity or enforceability of such provision, or the application
thereof, in any other jurisdiction.

         (o) HEADINGS; RECITALS. All Section headings and the recitals herein
are for convenience of reference only and are not part of this Agreement, and no
construction or reference shall be derived therefrom.

                                      -29-
<PAGE>

         (p) COUNTERPARTS. For the convenience of the parties hereto, this
Agreement may be executed in any number of counterparts, each of which shall be
deemed to be an original and all of which shall together constitute the same
agreement.

                                      -30-
<PAGE>

         IN WITNESS WHEREOF, Cablevision, CSC Holdings, NBC and NBC-Rainbow have
executed and delivered this Agreement, or a counterpart hereof, as of the date
first written above or, where applicable, across from a party's signature on
such counterpart.

                                    CABLEVISION SYSTEMS CORPORATION

                                    By: /s/ Andrew Rosengard
                                       --------------------------
                                       Name:  Andrew Rosengard
                                       Title: Executive Vice President, Finance

                                    CSC HOLDINGS, INC.

                                    By: /s/ Andrew Rosengard
                                       --------------------------
                                       Name:  Andrew Rosengard
                                       Title: Executive Vice President, Finance

                                    NATIONAL BROADCASTING COMPANY, INC.

                                    By: /s/ Mark W. Begor
                                       ---------------------------
                                       Name: Mark W. Begor
                                       Title: Executive Vice President
                                              and Chief Financial Officer

                                    NBC-RAINBOW HOLDING, INC.

                                    By: /s/ Mark W. Begor
                                       ---------------------------
                                       Name: Mark W. Begor
                                       Title: Executive Vice President
                                              and Chief Financial Officer

                                      -31-<PAGE>

                                                                  Exhibit 10.43

                                                                [Execution Copy]

                          REGISTRATION RIGHTS AGREEMENT

            REGISTRATION RIGHTS AGREEMENT, dated as of October 6, 2000,
between Cablevision Systems Corporation, a Delaware corporation (the "COMPANY"),
on the one hand, and NBC-Rainbow Holding, Inc., a Delaware corporation (the
"STOCKHOLDER"), on the other hand.

            WHEREAS, the Stockholder currently owns shares of Class A common
stock of Rainbow Media Holdings, Inc.;

            WHEREAS, pursuant to an Agreement (the "STOCKHOLDERS' AGREEMENT"),
dated of even date herewith, among the Company, CSC Holdings, Inc., National
Broadcasting Company, Inc. and the Stockholder, the Stockholder has the right to
exchange such shares of Class A common stock of Rainbow Media Holdings, Inc. for
shares of the Company's Rainbow Media Group Class A tracking stock; and

            WHEREAS, the Company and the Stockholder desire to have the shares
of the Company's Rainbow Media Group Class A tracking stock received by the
Stockholder pursuant to the Stockholders' Agreement be subject to the rights
described herein;

            NOW, THEREFORE, in consideration of the premises and the mutual
agreements set forth herein, the parties agree as follows:

            1.    DEFINITIONS.

            (a)   As used herein, the following terms shall have the following
      meanings:

            "AGREEMENT" shall mean this Registration Rights Agreement, as
      amended, supplemented or otherwise modified from time to time.

            "BUSINESS DAY" shall mean any day other than a Saturday, Sunday or
      other day which the New York Stock Exchange (or, if different, the
      principal exchange on which the Rainbow Media Group Class A Shares are
      traded) is not open for trading.

            "COMMISSION" shall mean the Securities and Exchange Commission.

            "COMPANY" shall have the meaning set forth in the preamble and shall
      also include the Company's successors.

            "DERIVATIVE SECURITIES" shall mean any derivative security
      including, without limitation, any rights, warrants, convertible or
      exchangeable securities or other securities issued by a Derivative
      Securities Issuer, that are offered with, convertible into, or
      exchangeable or exercisable for, any Registrable Securities.

<PAGE>

            "DERIVATIVE SECURITIES ISSUER" shall mean (a) the Stockholder, (b)
      any of affiliate of the Stockholder, or (c) any financial institution
      issuing Derivative Securities for the benefit of the Stockholder or any of
      its affiliates in a transaction in which the net proceeds of such
      Derivative Securities will be received by the Stockholder or an affiliate
      of the Stockholder.

            "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, as
      amended from time to time.

            "PROSPECTUS" shall mean the prospectus included in the Registration
      Statement, including any preliminary prospectus, and any such prospectus
      as supplemented by any prospectus supplement with respect to the terms of
      the offering of any of the Registrable Securities, and by all other
      amendments and supplements to such prospectus, and in each case including
      all documents incorporated by reference therein.

            "REGISTER", "REGISTERED" and "REGISTRATION" refer to a registration
      of Registrable Securities effected by preparing and filing a Registration
      Statement in compliance with the Securities Act and the declaration or
      ordering of the effectiveness of such Registration Statement.

            "REGISTRABLE SECURITIES" shall mean (i) the Rainbow Media Group
      Class A Shares to be received upon Exchange by the Stockholder pursuant to
      the Stockholders' Agreement and (ii) any securities of the Company issued
      or issuable with respect to any Rainbow Media Group Class A Shares
      referred to in clause (i) by way of stock dividend or stock split or in
      connection with a combination of shares, recapitalization, merger,
      consolidation or other reorganization or otherwise. As to any particular
      Registrable Securities, such securities shall cease to be Registrable
      Securities when (x) a Registration Statement with respect to the sale of
      such securities shall have become effective under the Securities Act and
      such securities shall have been disposed of in accordance with such
      Registration Statement, (y) they shall have been distributed to the public
      pursuant to Rule 144 or Rule 145 (or any successor provision) under the
      Securities Act or (z) they shall have ceased to be outstanding.

            "REGISTRATION EXPENSES" shall mean all expenses incident to the
      performance of or compliance with this Agreement by any party, including,
      without limitation, all Registration, filing and National Association of
      Securities Dealers, Inc. fees, all fees and expenses of complying with
      securities or blue sky laws, all word processing, duplicating and printing
      expenses, messenger and delivery expenses, the fees and disbursements of
      counsel for the Company and of its independent public accountants,
      including the expenses of any special audits or "comfort" letters required
      by or incident to such performance and compliance, premiums and other
      costs of policies of insurance obtained by the Company against liabilities
      arising out of the public offering of Registrable Securities being
      registered, any fees and disbursements of underwriters, all underwriting
      discounts and commissions and transfer taxes, if any, relating to
      Registrable Securities and any other registration expenses incident to the
      registration of the Registrable Securities issued to the Stockholder.

                                      -2-
<PAGE>

            "REGISTRATION STATEMENT" shall mean the registration statement of
      the Company on Form S-3 (or, if the Company is not then eligible for Form
      S-3, such other form for which the Company then qualifies) which is filed
      by the Company with the Commission in accordance with Section 3 below. The
      term "Registration Statement" shall also include all exhibits and
      financial statements and schedules and documents incorporated by reference
      in such Registration Statement when it becomes effective under the
      Securities Act, and in the case of references to the Registration
      Statement as of a date subsequent to the effective date, as amended or
      supplemented as of such date.

            "SECURITIES ACT" shall mean the Securities Act of 1933, as amended
      from time to time.

            (b) Capitalized terms used herein but not otherwise defined herein
shall have the same meaning as in the Stockholders' Agreement. Terms defined in
the singular shall have a comparable meaning when used in the plural, and vice
versa. All matters of an accounting nature in connection with this Agreement and
the transactions contemplated hereby shall be determined in accordance with
generally accepted accounting principles as in effect from time to time. As used
herein, the neuter gender shall also denote the masculine and feminine, and the
masculine gender shall also denote the neuter and feminine, where the context so
permits. The words "hereof," "herein" and "hereunder", and words of similar
import, when used in this Agreement shall refer to this Agreement as a whole and
not to any particular provision of this Agreement, and section, subsection,
paragraph, schedule and exhibit references are to this Agreement unless
otherwise specified.

            2.    REGISTRATION RIGHTS.

            (a)   DEMAND REGISTRATIONS. During the period commencing on the
first anniversary of the Distribution and ending on December 31, 2011 (as it may
be extended pursuant to Section 16, the "REGISTRATION Period"), the Stockholder
shall have the right upon written request (a "REQUEST") to request that the
Company effect the following registrations under the Securities Act:

            (i)   five demand registrations to be effected by means of a firm
      commitment underwritten public offering (an "UNDERWRITTEN Offering"), two
      of which may be in connection with publicly-registered Derivative
      Securities or similar transactions ("PUBLIC DERIVATIVES TRANSACTIONS")
      under which the Stockholder may demand a total of two registrations for
      each Underwritten Offering (one at issuance and one at settlement, which
      two registrations shall constitute only one demand registration effected
      by an Underwritten Offering for the purposes of calculating how many
      demand registrations the Stockholder has requested that the Company make
      pursuant to this Section 2(a)(i)) of Registrable Securities in connection
      with such issuances of Derivative Securities, subject to the conversion of
      the demand registration rights for Public Derivatives Transactions into
      demand registration rights for Private Derivatives Transactions as
      provided in Section 2(a)(ii) and subject to the following limitations:

                  (A)   for an Underwritten Offering that is not a Public
            Derivatives Transaction, the Stockholder shall not demand
            registration for less than the

                                      -3-
<PAGE>

            greater of (1) 7,500,000 Rainbow Media Group Class A Shares (as
            adjusted to reflect any stock splits, combinations of shares,
            reclassification or comparable transactions) or (2) $150 million of
            Registrable Securities;

                  (B)   for a Public Derivatives Transaction, the Stockholder
            shall not demand registration for less than $100 million of
            Registrable Securities; and

                  (C)   for a Public Derivatives Transaction, the Stockholder
            shall not demand registration within 3 years of a preceding issuance
            of securities in a Public Derivatives Transaction;

            (ii)  demand registrations to consummate five negotiated sale or
      hedging or similar transactions ("PRIVATE DERIVATIVES Transactions");
      PROVIDED that the Stockholder may elect to increase the number of demand
      registrations for Private Derivatives Transactions by converting one or
      both of its demand registrations for Public Derivatives Transactions,
      which shall have the effect of reducing the number of Underwritten
      Offerings for which a demand right can be exercised upon each conversion,
      subject to the limitation that the Stockholder shall not demand
      registration for a Private Derivatives Transaction for less than 1,000,000
      Rainbow Media Group Class A Shares (as adjusted to reflect any stock
      splits, combinations of shares, reclassifications or comparable
      transactions); and

            (iii) piggy-back registration rights on any registration under the
      Securities Act of any Rainbow Media Group Class A Shares in an
      Underwritten Offering of at least $100 million (whether or not for the
      account of the Company or for any stockholder of the Company) in a manner
      that would permit the registration under the Securities Act of Registrable
      Securities for sale to the public (a "STOCKHOLDER PIGGY-BACK
      REGISTRATION"); PROVIDED that the Company shall have no obligation under
      this clause (iii) with respect to any registration on Form S-4 (or any
      other Registration Statement registering shares in a merger,
      consolidation, acquisition or similar transaction) or Form S-8 or any
      successor or comparable forms, or a Registration Statement filed in
      connection with an exchange offer or otherwise pursuant to a dividend
      reinvestment plan, stock purchase plan or other employee benefit plan. If
      the Company proposes a Stockholder Piggy-Back Registration, the Company
      shall give notice to the Stockholder of its intention to do so not later
      than ten days prior to the anticipated filing date of the applicable
      Registration Statement. The Stockholder may elect to participate in such
      registration on the same basis as the planned method of distribution
      contemplated by the proposed registration by delivering written notice of
      its election to the Company within five days after the receipt of the
      Company's notice pursuant to this clause (iii). The Stockholder's election
      pursuant to this clause (iii) must (1) specify the amount of Registrable
      Securities desired to be included in such registration by the Stockholder
      and (2) include any other information that the Company reasonably
      requested be included in such Registration Statement. Upon its receipt of
      the Stockholder's election pursuant to this clause (iii), the Company
      will, subject to the cutback rights described below in Section 2(b), use
      its reasonable efforts to include in such registration all Registrable
      Securities requested to be included.

                                      -4-
<PAGE>

            In addition to the other limitations set forth above, the Company
shall not be obligated to effect more than one demand registration (which for
purposes of this paragraph may include two registrations (one at issuance and
one at settlement) for a Public Derivatives Transaction) in any calendar year;
provided that the Stockholder may not submit a Request for registration for at
least 90 days after the completion of an offering of Rainbow Media Group Class A
Shares or the completion by the Stockholder of a Private Derivatives
Transaction.

            (b)   PIGGY-BACK REGISTRATION; CUTBACK RIGHTS. The Company may
include in any registration relating to an Underwritten Offering other
securities for sale for its own account or for the account of any other Person.
Notwithstanding the foregoing, in any registration in which the Stockholder
exercises a piggy-back demand right pursuant to Section 2(a)(iii) or the Company
or another Person exercises a right to have other securities included on a
Registration Statement demanded by the Stockholder pursuant to this Section
2(b), if the managing or lead underwriter or underwriters thereof shall
determine in its or their reasonable good faith judgment that it cannot sell, or
that it would not be advisable to sell, all the securities desired to be sold,
then the number of securities that each such Person may have included shall be
reduced according to the following terms until the managing or lead underwriter
or underwriters shall believe that the remaining securities can be sold and it
would not be inadvisable to sell such number of securities:

            (i)   in the event that the offering in question includes a primary
      offering of securities by the Company, then the number of securities that
      the Company may have included shall not be reduced and the number of
      securities which the Stockholder and any other Persons may have included
      shall be reduced pro rata in proportion to the total number of securities
      sought to be included by each such person, subject, in all cases, to the
      Company's contractual obligations pursuant to the Registration Rights
      Agreements, each dated as of January 27, 1986, as amended, between the
      Company and Cablevision Systems Company in the first case and the Company
      and CSC Holdings Company in the second case, and

            (ii)  in the event that the offering in question does not include a
      primary offering of securities by the Company, then the number of
      securities that the Stockholder and any other Persons may have included
      shall be reduced pro rata in proportion to the total number of securities
      sought to be included by each such Person, subject, in all cases, to the
      Company's contractual obligations pursuant to the Registration Rights
      Agreements, each dated as of January 27, 1986, as amended, between the
      Company in the first case and the Company and Cablevision Systems Company
      and CSC Holdings Company in the second case.

            If, as a result of the cutback rights set forth above, less than 50%
of the Registrable Securities sought to be registered by the Stockholder would
be included in a registration under Section 2(a)(i), the Stockholder's demand
will not be deemed to have been made.

            (c)   REGISTRATION STATEMENT FORM. The Company shall effect any
registration requested under this Section 2 by the filing of a Registration
Statement on such form as the Company may determine; provided that the Company
shall not be obligated to register any

                                      -5-
<PAGE>

securities on a "shelf" Registration Statement pursuant to Rule 415 under the
Securities Act (or any successor provisions of such Act) or otherwise to
register securities on a continuous or delayed basis. The Company's obligation
to effect any such registration shall apply only to the Rainbow Media Group
Class A Shares, and the Stockholder shall be responsible for the separate
registration of the securities to be issued by the Stockholder.

            (d)   EXPENSES. The Registration Expenses in connection with any
registration which may be requested under this Section 2 shall be borne by the
Stockholder, except that another holder piggy-backing on the Stockholder's
Registration Statement pursuant to Section 2(b) shall pay (or shall require the
Company to pay) its pro rata share of the Registration Expenses and if the
Stockholder piggy-backs on another Person's registration pursuant to Section
2(a)(iii), the Stockholder will pay its pro rata share of the Registration
Expenses.

            (e)   SELECTION OF UNDERWRITERS. One co-lead managing underwriter
for any Underwritten Offering pursuant to Section 2(a)(i) that is not a Public
Derivatives Transaction shall be selected by the Company, and the other co-lead
managing underwriter for such Underwritten Offering that is not a Public
Derivatives Transaction shall be selected by the Stockholder and shall be
reasonably acceptable to the Company. The co-lead managing underwriter selected
by the Stockholder shall establish the pricing of the Underwritten Offering
pursuant to Section 2(a)(i) that is not a Public Derivatives Transaction. The
book-running managing underwriter for any Public Derivatives Transaction
pursuant to Section 2(a)(i) shall be selected by the Stockholder and the other
managing underwriter for such Public Derivatives Transaction shall be selected
by the Company and shall be reasonably acceptable to the Stockholder. The
book-running managing underwriter selected by the Stockholder shall establish
the pricing of the Public Derivatives Transaction pursuant to Section 2(a)(i).

            3.    REGISTRATION PROCEDURES. If the Company is required to
register Registrable Securities under the Securities Act as provided in Section
2, the Company will as expeditiously as possible:

            (i)   prepare and (within 60 days after the receipt of a Request)
      file with the Commission the requisite Registration Statement to effect
      such registration and use reasonable efforts to cause such Registration
      Statement to become effective, PROVIDED that before filing such
      Registration Statement or any amendments thereto, the Company will furnish
      to the counsel selected by the Stockholder copies of all such documents
      proposed to be filed, which documents will be subject to the review of
      such counsel before any such filing is made, and the Company will comply
      with any reasonable request made by such counsel to make changes in any
      information contained in such documents relating to the Stockholder;

            (ii)  prepare and file with the Commission such amendments and
      supplements to such Registration Statement and the Prospectus used in
      connection therewith as may be necessary to maintain the effectiveness of
      such registration and to comply with the provisions of the Securities Act
      with respect to the disposition of all securities covered by such
      Registration Statement until the earliest of (A) the termination of this
      Agreement pursuant to Section 16, (B) such time as all of such securities
      have been disposed of and

                                      -6-
<PAGE>

      (C) the date which is 60 days after the date of initial effectiveness of
      such Registration Statement;

            (iii) furnish to the Stockholder such number of conformed copies of
      such Registration Statement and of each such amendment and supplement
      thereto (in each case including all exhibits), such number of copies of
      the Prospectus contained in such Registration Statement and any
      supplements thereto and any other Prospectus filed under Rule 424 under
      the Securities Act, in conformity with the requirements of the Securities
      Act, and such other documents, including documents incorporated by
      reference, as the Stockholder may reasonably request;

            (iv)  use all reasonable efforts to register or qualify all
      Registrable Securities registered pursuant to such Registration Statement
      under such other securities or blue sky laws of such jurisdictions as the
      Stockholder shall reasonably request, to keep such registration or
      qualification in effect for so long as such Registration Statement remains
      in effect, and take any other action which may be reasonably necessary or
      advisable to enable the Stockholder to consummate the disposition in such
      jurisdictions of the securities owned by the Stockholder, except that the
      Company shall not for any such purpose be required to qualify generally to
      do business as a foreign corporation in any jurisdiction wherein it would
      not but for the requirements of this clause (iv) be obligated to be so
      qualified, to be subject to taxation or to consent to general service of
      process in any such jurisdiction;

            (v)   use all reasonable efforts to cause all Registrable Securities
      covered by such Registration Statement to be registered with or approved
      by such other governmental agencies or authorities as may be necessary to
      enable the Stockholder to consummate the disposition of such Registrable
      Securities;

            (vi)  if such registration includes an Underwritten Offering that is
      not a Public Derivatives Transaction, furnish to the Stockholder a signed
      counterpart, addressed to the Stockholder (and the underwriters), of (x)
      an opinion of counsel for the Company, dated the date of the closing under
      the underwriting agreement, and (y) a "comfort letter" dated the effective
      date of such Registration Statement (and a supplement to such "comfort
      letter" dated the date of the closing under the underwriting agreement),
      signed by the independent public accountants who have certified the
      Company's financial statements included in such Registration Statement,
      covering substantially the same matters with respect to such Registration
      Statement (and the Prospectus included therein) and, in the case of the
      accountants' letter, with respect to events subsequent to the date of such
      financial statements, as are customarily covered in opinions of issuer's
      counsel and in accountants' letters delivered to the underwriters in
      underwritten public offerings of securities and, in the case of the
      accountants' letter, such other financial matters, as the Stockholder (or
      the underwriters, if any) may reasonably request;

            (vii) promptly notify the Stockholder at any time when the Company
      becomes aware that a Prospectus relating to Registrable Securities is
      required to be delivered under the Securities Act, of the happening of any
      event as a result of which the Prospectus included in such Registration
      Statement, as then in effect, includes an untrue statement of

                                      -7-
<PAGE>

      a material fact or omits to state any material fact required to be stated
      therein or necessary to make the statements therein not misleading in the
      light of the circumstances under which they were made, and at the request
      of the Stockholder (and subject to Section 4(b)(ii)) promptly prepare and
      furnish to the Stockholder a reasonable number of copies of a supplement
      to or an amendment of such Prospectus as may be necessary so that, as
      thereafter delivered to the purchasers of such securities, such Prospectus
      shall not include an untrue statement of a material fact or omit to state
      a material fact required to be stated therein or necessary to make the
      statements therein not misleading in the light of the circumstances under
      which they were made;

           (viii) otherwise use all reasonable efforts to comply with the
      Securities Act and the Exchange Act and with all applicable rules and
      regulations of the Commission, and make available to its security holders,
      as soon as reasonably practicable, an earnings statement covering the
      period of at least twelve months, but not more than eighteen months,
      beginning with the first full calendar month after the effective date of
      such Registration Statement, which earnings statement shall satisfy the
      provisions of Section 11(a) of the Securities Act, and not file any
      amendment or supplement to such Registration Statement or Prospectus to
      which the Stockholder shall have reasonably objected on the grounds that
      such amendment or supplement does not comply in all material respects with
      the requirements of the Securities Act;

            (ix)  provide a transfer agent and registrar for all Registrable
      Securities covered by such Registration Statement not later than the
      effective date of such Registration Statement;

            (x)   use all reasonable efforts to list all Rainbow Media Group
      Class A Shares covered by such Registration Statement on any securities
      exchange on which any of the Rainbow Media Group Class A Shares are then
      listed; and

            (xi)  upon the reasonable request of the Stockholder, otherwise use
      all reasonable efforts to effect the registration of Registrable
      Securities under the Securities Act as provided in Section 2.

            In the case of any Underwritten Offering that is not a Public
Derivatives Transaction, the Company will participate in customary "roadshow"
presentations and customary analyst's meetings as reasonably requested by the
co-lead managing underwriters. In the case of a Public Derivatives Transaction,
the Company shall be required to participate in not more than two investor
conference calls in connection with such offering as reasonably requested by the
managing underwriters. No participation in roadshows, analysts' meetings or
investor conference calls by the Company shall be required in connection with
any Private Derivatives Transaction.

            If requested by the underwriters for any Underwritten Offering, the
Company will enter into its customary underwriting agreement with such
underwriters for such offering, to contain such representations and warranties
by the Company and such other terms as are customarily contained in agreements
of this type, including, without limitation, indemnities to the effect and to
the extent provided in Section 6. The Stockholder shall be a party to such

                                      -8-
<PAGE>

underwriting agreement and may, at its option, require that any or all of the
representations and warranties by, and the other agreements on the part of, the
Company to and for the benefit of such underwriters shall also be made to and
for the benefit of the Stockholder and that any or all of the conditions
precedent to the obligations of such underwriters under such underwriting
agreement be conditions precedent to the obligations of the Stockholder.

            4.    STOCKHOLDER'S OBLIGATIONS. (a) FURNISHING INFORMATION. The
Stockholder shall furnish the Company such information regarding itself and the
distribution proposed by it as the Company may reasonably request, including,
without limitation, providing the Company with questionnaires as are customary
for similar transactions, and which the Company may reasonably request or as may
be required by applicable securities laws and regulations, and as shall be
required in connection with any registration, qualification or compliance
referred to in this Agreement. The Stockholder agrees to notify the Company as
promptly as practicable of any inaccuracy or change in information previously
furnished to the Company or of the happening of any event, in either case as a
result of which any Prospectus relating to such registration contains an untrue
statement of a material fact regarding the Stockholder or the distribution of
such Registrable Securities or omits to state any material fact regarding the
Stockholder or the distribution of such Registrable Securities required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading, and to furnish to the
Company promptly any additional information required to correct and update any
previously furnished information or required such that such Prospectus shall not
contain, with respect to the Stockholder or the distribution of such Registrable
Securities, an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein,
in the light of the circumstances under which they were made, not misleading.

            (b)   HOLDBACK AGREEMENT; POSTPONEMENT. (i) The Stockholder agrees
by acquisition of the Registrable Securities not to engage in transactions
involving the Company's equity securities, including by commencing any public
offering of the Company's equity securities, by entering into transactions that
result in another party selling the Company's equity securities or by causing a
demand registration, during the seven days prior to and the 180 days after any
Registration Statement relating to the Company's equity securities (other than
under Form S-4 or Form S-8) (either for its own account or for the benefit of
the holders of any securities of the Company) has become effective; PROVIDED,
that the Company shall give the Stockholder notice as soon as reasonably
practicable of the date upon which a Registration Statement relating to the
Company's equity securities is expected to become effective and, in any event
the Stockholder's holdback restriction for the seven day period prior to
effectiveness shall not commence until the seventh day after such notice is
given.

            (ii)  The Company may, by written notice to the Stockholder,
postpone any registration which is requested pursuant to Section 2 or delivery
of a Prospectus pursuant to Section 3(vii) if (A) the Company reasonably
believes that the use of such Registration Statement would require disclosure of
a material corporate development not otherwise required to be disclosed that the
Company has a valid business purpose for not disclosing, (B) the Company is in
the process of making, or preparing to make, a registered offering of securities
and the Company reasonably deems it advisable to temporarily discontinue
disposition of securities, or (C) the Company reasonably believes that
disposition of securities at such time

                                      -9-
<PAGE>

would have a material adverse affect on the Company. In the event the Company
makes any such election, the Stockholder agrees to keep confidential the fact of
such election and any information provided by the Company in connection
therewith.

            (iii) Notwithstanding the black-out rights and the lock-up periods
set forth above in Sections 4(b)(i) and 4(b)(ii), the Stockholder shall in any
event be entitled to 120 days in each calendar year that are not subject to any
black-out or lock-up.

            5.    REGISTRATION STATEMENT. In connection with the preparation and
filing of the Registration Statement under the Securities Act, the Company will
give the Stockholder, its underwriters, if any, and their respective counsel,
the opportunity to participate in the preparation of such Registration
Statement, each Prospectus included therein or filed with the Commission, and
each amendment thereof or supplement thereto. Such opportunity to participate
shall include reasonable access for purposes of due diligence, subject to the
execution and delivery of appropriate confidentiality agreements.

            6.    INDEMNIFICATION. (a) INDEMNIFICATION BY THE COMPANY. In the
event of any registration of any Registrable Securities of the Company under the
Securities Act, the Company will, and hereby does, indemnify and hold harmless
the Stockholder, each other Person who participates as an underwriter in the
offering or sale of such Registrable Securities and each other Person who
controls any such underwriter within the meaning of the Securities Act, against
any losses, claims, damages or liabilities, joint or several, to which the
Stockholder or any such underwriter or controlling person may become subject
under the Securities Act or otherwise, insofar as such losses, claims, damages
or liabilities (or actions or proceedings, whether commenced or threatened, in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in the Registration Statement
under which such Registrable Securities were registered under the Securities
Act, any Prospectus contained therein, or any amendment or supplement thereto,
or any omission or alleged omission to state therein a material fact required to
be stated therein or necessary to make the statements therein not misleading,
and the Company will reimburse the Stockholder and each such underwriter and
controlling person for any legal or any other expenses reasonably incurred by
them in connection with investigating or defending any such loss, claim,
liability, action or proceedings; PROVIDED that the Company shall not be liable
in any such case to the extent that any such loss, claim, damage, liability (or
action or proceeding in respect thereof) or expense arises out of or is based
upon (i) an untrue statement or alleged untrue statement or omission or alleged
omission made in such Registration Statement, any such Prospectus or amendment
or supplement thereto in reliance upon and in conformity with written
information furnished to the Company by the Stockholder for use in the
preparation thereof, (ii) the use of any Prospectus after such time as the
obligation of the Company to keep the same effective and current has expired, or
(iii) the use of any Prospectus after such time as the Company has advised the
Stockholder that the filing of a post-effective amendment or supplement thereto
is required, except such Prospectus as so amended or supplemented, and PROVIDED
FURTHER that the Company shall not be liable to any Person who participates as
an underwriter in the offering or sale of Registrable Securities or any other
Person, if any, who controls such underwriter within the meaning of the
Securities Act in any such case to the extent that any such loss, claim, damage,
liability (or action or proceeding in respect thereof) or expense arises out of
the matters described in (i), (ii) or (iii) above or such Person's failure to
send or give a copy of the final Prospectus or

                                      -10-
<PAGE>

supplement to the Persons asserting an untrue statement or alleged untrue
statement or omission or alleged omission at or prior to the written
confirmation of the sale of Registrable Securities to such Person if such
statement or omission was corrected in such final Prospectus or supplement. Such
indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of the Stockholder or any such underwriter or controlling
person and shall survive the transfer of such securities by the Stockholder. The
Company's indemnity hereunder shall relate only to Rainbow Media Group Class A
Shares, and the Company shall otherwise have no indemnity obligations with
respect to the securities issued by the Stockholder or the registration thereof.

            (b)   INDEMNIFICATION BY THE STOCKHOLDER. The Stockholder will, and
hereby does, indemnify and hold harmless (in the same manner and to the same
extent as set forth in subdivision (a) of this Section 6) the Company, each
director and officer of the Company, and each other Person, if any, who controls
the Company, within the meaning of the Securities Act, with respect to any
untrue statement or alleged untrue statement of a material fact in or omission
or alleged omission to state a material fact from such Registration Statement,
any Prospectus contained therein, or any amendment or supplement thereto, if
such untrue statement or alleged untrue statement or omission or alleged
omission was made in reliance upon and in conformity with written information
furnished to the Company by the Stockholder for use in the preparation of such
Registration Statement, Prospectus, or amendment or supplement thereto;
PROVIDED, HOWEVER, that the Stockholder shall not be liable to the extent that
the losses, liabilities or expenses arise out of or are based upon (i) the use
by the Company of any Prospectus after such time as the obligation of the
Company to keep the same effective and current has expired or (ii) the use by
the Company of any Prospectus after such time as the Stockholder has advised the
Company that the filing of a post-effective amendment or supplement thereto is
required with respect to any information contained in such Prospectus concerning
the Stockholder, except such Prospectus as so amended or supplemented. Such
indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of the Company, or any such director, officer, or
controlling person and shall survive the transfer of such securities by the
Stockholder.

            (c)   NOTICES OF CLAIMS, ETC. Promptly after receipt by an
indemnified party of notice of the commencement of any action or proceeding
involving a claim referred to in the preceding subdivisions of this Section 6,
such indemnified party will, if a claim in respect thereof is to be made against
an indemnifying party, give written notice to the latter of the commencement of
such action; PROVIDED that the failure of any indemnified party to give notice
as provided herein shall not relieve the indemnifying party of its obligations
under the preceding subdivisions of this Section 6, except to the extent that
the indemnifying party is actually prejudiced by such failure to give notice. In
case any such action is brought against an indemnified party, unless in such
indemnified party's reasonable judgment a conflict of interest between such
indemnified and indemnifying parties may exist in respect of such claim, the
indemnifying party shall be entitled to participate in and to assume the defense
thereof, jointly with any other indemnifying party similarly notified to the
extent that it may wish, with counsel reasonably satisfactory to such
indemnified party, and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party shall not be liable to the indemnified party for any legal or
other expenses subsequently incurred by the latter in connection with the
defense thereof other than reasonable costs of investigation.

                                      -11-
<PAGE>

            (d)   CONTRIBUTION. If for any reason the foregoing indemnity is
unavailable, or is insufficient to hold harmless an indemnified party, then the
indemnifying party shall contribute to the amount paid or payable by the
indemnified party as a result of the expense, loss, damage or liability, (i) in
such proportion as is appropriate to reflect the relative fault of the
indemnifying party on the one hand and the indemnified party on the other
(determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or omission relates to information supplied
by the indemnifying party or the indemnified party and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such untrue statement or omission), or (ii) if the allocation provided by clause
(i) above is not permitted by applicable law or provides a lesser sum to the
indemnified party than the amount hereinafter calculated, in the proportion as
is appropriate to reflect not only the relative fault of the indemnifying party
and the indemnified party, but also the relative benefits received by the
indemnifying party on the one hand and the indemnified party on the other, as
well as any other relevant equitable considerations. No indemnified party guilty
of fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any indemnifying party
who was not guilty of such fraudulent misrepresentation.

            (e)   ADDITIONAL INDEMNIFICATION BY THE STOCKHOLDER. In the case of
any registration of securities other than Rainbow Media Group Class A Shares, it
shall be a condition to the Company's obligation to proceed under this Agreement
that the Stockholder shall provide, in a manner reasonably satisfactory to the
Company, indemnification, contribution and other rights in favor of the Company,
each director and officer of the Company and each other Person, if any, who
controls the Company within the meaning of the Securities Act with respect to
the securities issued by the Stockholder and the registration thereof, in the
same manner and to the same extent as applicable to the Stockholder in the case
of registrations of Registrable Securities hereunder. In addition, to the extent
applicable, the Company shall furnish the Stockholder indemnification,
contribution and other rights in favor of the Stockholder, each director and
officer of the Stockholder and each other Person, if any, who controls the
Stockholder within the meaning of the Securities Act with respect to the written
information, if any, furnished to the Stockholder by the Company for use in the
preparation of the registration statement related to the registration of such
other securities, in the same manner and to the same extent as applicable to the
Stockholder in the case of registrations of Registrable Securities under Section
6(b).

            7.    COVENANTS RELATING TO RULE 144/145. The Company will prepare
and file in a timely manner, information, documents and reports in compliance
with the Exchange Act so as to comply with the requirements of such Act and the
rules and regulations thereunder and will, at its expense, forthwith upon the
request of the Stockholder, deliver to the Stockholder a certificate, signed by
the Company's principal financial officer, stating (a) the Company's name,
address and telephone number (including area code), (b) the Company's Internal
Revenue Service identification number, (c) the Company's Commission file number,
(d) the number of shares of Common Stock outstanding as shown by the most recent
report or statement published by the Company, and (e) whether the Company has
filed the reports required to be filed under the Exchange Act for a period of at
least 90 days prior to the date of such certificate and in addition has filed
the most recent annual report required to be filed thereunder. If at any time
the Company is not required to file reports in compliance with either Section 13
or Section 15(d) of the Exchange Act, the Company at its expense will forthwith,
upon the written request of the Stockholder, make available adequate current
public information with respect to the Company

                                      -12-
<PAGE>

within the meaning of paragraph (c)(2) of Rule 144 of the General Rules and
Regulations promulgated under the Securities Act.

            8.    NOTICES, ETC. All notices, requests, demands or other
communications required by or otherwise with respect to this Agreement shall be
in writing and shall be deemed to have been duly given to any party when
delivered personally (by courier service or otherwise), when delivered by
telecopy if receipt is confirmed by return telecopy, or five days after being
mailed by registered or certified mail, return receipt requested, in each case
to the applicable addresses set forth below:

            If to the Stockholder:

            NBC-Rainbow Holding, Inc.
            30 Rockefeller Plaza
            New York, New York 10112
            Attention:  Chief Financial Officer
            Facsimile:  (212) 664-0427

            With a copy to:

            Law Department
            30 Rockefeller Plaza
            New York, New York 10112
            Attention:  Vice President
                        Corporate and Transactions Law
            Facsimile:  (212) 977-7165

            If to the Company:

            Cablevision Systems Corporation
            1111 Stewart Avenue
            Bethpage, New York 11714
            Attention:  General Counsel
            Facsimile:  (516) 803-2577

            with a copy to:

            Sullivan & Cromwell
            125 Broad Street
            New York, New York 10004
            Attention: John P. Mead
            Facsimile: (212) 558-3588

or to such other address as such party shall have designated by notice so given
to each other party.

                                      -13-
<PAGE>

            9.    AMENDMENTS, WAIVERS, ETC. This Agreement may not be amended,
changed, supplemented, waived or otherwise modified or terminated except by an
instrument in writing signed by the party against whom enforcement is sought or
as expressly provided in Section 16. The failure of any party to exercise any
right, power or remedy provided under this Agreement or otherwise available in
respect hereof at law or in equity, or to insist upon compliance by any other
party with its obligations hereunder, and any custom or practice of the parties
at variance with the terms hereof, shall not constitute a waiver by such party
of its right to exercise any such or other right, power or remedy or to demand
such compliance.

            10.   ENTIRE AGREEMENT. This Agreement and the Stockholders'
Agreement embody the entire agreement and understanding between the parties
relating to the subject matter hereof and supersede all prior agreements and
understandings relating to such subject matter.

            11.   SEVERABILITY. If any term of this Agreement or the application
thereof to any party or circumstance shall be held invalid or unenforceable to
any extent, the remainder of this Agreement and the application of such term to
the other parties or circumstances shall not be affected thereby and shall be
enforced to the greatest extent permitted by applicable law.

            12.   SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon
and shall inure to the benefit of and be enforceable by the parties and their
respective successors and assigns; provided that neither the rights nor the
obligations of any party may be assigned or delegated without the prior written
consent of the other parties.

            13.   GOVERNING LAW. THIS AGREEMENT AND ALL DISPUTES HEREUNDER SHALL
BE GOVERNED BY AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF NEW YORK.

            14.   NAME, CAPTIONS. The name assigned this Agreement and the
section captions used herein are for convenience of reference only and shall not
affect the interpretation or construction hereof.

            15.   COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one instrument. Each counterpart may consist of a
number of copies each signed by less than all, but together signed by all, the
parties hereto.

            16.   EFFECTIVENESS; TERMINATION. This Agreement shall not be
effective until such time as the Stockholder beneficially owns any Registrable
Securities and no provision hereof shall have any force and effect until such
time. This Agreement shall terminate and be of no further force and effect upon
the expiration of the Registration Period; PROVIDED, HOWEVER, that after such
date, the Stockholder shall have the right to utilize one remaining demand
request for an underwritten offering of not less than 10 million Rainbow Media
Group Class A Shares (as adjusted for stock splits, stock dividends,
combinations of shares, reclassifications or comparable transactions), provided
such request is made on or prior to June 30, 2012; PROVIDED that,
notwithstanding this Section 16, the provisions of Section 6 shall survive the
termination of this Agreement.

                                      -14-
<PAGE>

            IN WITNESS WHEREOF, the parties have duly executed this Agreement as
of the date first above written.

                              CABLEVISION SYSTEMS CORPORATION

                              By:   /s/ Andrew Rosengard
                                    -----------------------------------------
                                    Name:  Andrew Rosengard
                                    Title:  Executive Vice President, Finance

                              NBC-RAINBOW HOLDING, INC.

                              By:   /s/ Mark W. Begor
                                    ------------------------------------------
                                    Name: Mark W. Begor
                                    Title: Vice President

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00023-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00023-of-00352.parquet"}]]