Exhibit 10.23




                                 UnitedGlobalCom


September 26, 2000


Bruce Mann
2/53 Portland Street
Dover Heights, NSW
Australia 2030


Dear Bruce:

     This letter sets forth the agreement  ("Agreement"') among UnitedGlobalCom,
Inc. ("United"),  Austar United Communications  Limited ("Company") and yourself
concerning  your continued  employment with United and secondment to the Company
in Australia.  United may reassign you to a different  affiliated company and/or
location during the term of this Agreement.

     This Agreement  supersedes and replaces the  employment  agreement  between
UnitedGlobalCom,  Inc., CTV Pty Limited and STV Pty Limited, and you dated March
20, 1995 ("'l995  Agreement")  and any and all other written or oral  agreements
between  you,  United  and/or  an  affiliate  of  United  and all such  previous
agreements are hereby rendered null and void. The terms of the Agreement are set
forth below.

1.  Effective Date: March 20, 2000

2.  Title and Job   Managing Director, Austar Entertainment
    Description:    You will report to the CEO of Austar United Communications
                    Your duties and responsibilities will be as assigned by your
                    supervisor.

3.  Term:           The term of this Agreement will be for a period of three (3)
                    years,  commencing on the Effective Date and ending on March
                    20,  2003,  subject  to the  terms  and  conditions  of this
                    Agreement.

4.  Wages:          You will be paid on a bi-weekly basis, at a rate equal to an
                    annual  salary of  US$220,000,  to commence on the Effective
                    Date. This wage,  together with the other benefits described
                    below, represents your total compensation package.

5.  Bonus:          You will be eligible  for an annual bonus of up to a maximum
                    amount of fifteen  percent  (15%) of your base salary.  Your
                    eligibility  for  the  bonus  will  be  based  on  both  the
                    performance of the Company and your individual  performance.
                    The  granting  of the  bonus  is in the sole  discretion  of
                    senior management.



<PAGE>

                                                            Employment Extension
                                                                      Bruce Mann
                                                              September 26, 2000


6.  Cost of Living  You will be paid a cost of living differential,  for housing
    Differential:   and goods and services, in  accordance  with the policies of
                    United and as may be recommended by a third party consultant
                    used by  United.  Such  payment  will be made on the  normal
                    payroll dates.

7.  Automobile:     The Company will pay for an  automobile  and all  automobile
                    operating costs, to include gas,  insurance and maintenance,
                    as approved in advance by your supervisor.

8.  Benefits:       You will  continue to be eligible for the  standard  benefit
                    package  offered by United,  in  accordance  with the policy
                    guidelines  set forth by United and its insurance  carriers.
                    You will continue to be eligible to  participate in United's
                    401(k) plan in accordance with the plan guidelines.

9.  Tuition:        You  will be  reimbursed  for the cost of  tuition  fees and
                    transportation   for  your   children   enrolled  in  grades
                    kindergarten  through 12 (or the equivalent) who reside with
                    you in Australia as approved in advance by your supervisor.

10. Tax             Your taxes will continue to be equalized in accordance  with
    Equalization:   the "Tax  Equalization  Policy" of United. In general terms,
                    this means that the Company will bear the overall  worldwide
                    tax burden to the extent it exceeds  your  hypothetical  tax
                    liability  (within some limitations) had you remained in the
                    U.S.

                    If it is  determined  by  United  and  its  independent  tax
                    consultants that under United's Tax Equalization  Policy you
                    owe taxes as a result of your assignment, you agree that you
                    will pay such  amount  to  United.  If it is  determined  by
                    United  and  its  independent  tax  consultants  that  under
                    United's Tax Equalization Policy, United owes you taxes as a
                    result of your  assignment in the foreign  location,  United
                    agrees  to pay you  such  amount.  In the  event  you do not
                    submit  information  necessary to complete  your tax returns
                    for a given tax year by the date  required by  United's  tax
                    consultant  for  timely  filing or in the event you have not
                    paid  amounts  owing to United  under  the Tax  Equalization
                    Policy  for  prior  years,  you will have no right to be tax
                    equalized  for that tax year for which a tax return is to be
                    prepared and, in United's sole discretion,  United may elect
                    not to tax equalize you for such year.

11. Vacation:       You will  continue  to receive  twenty (20) days of vacation
                    per  anniversary  year,  which  accrues on a monthly  basis,
                    taken in accordance with United's policy. Your original date
                    of hire,  March 20,  1995,  will  continue to be used as the
                    anniversary date for calculating carry-over vacation.



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<PAGE>

                                                            Employment Extension
                                                                      Bruce Mann
                                                              September 26, 2000



12. Home Leave:     The  Company  agrees to pay for two  business  or four coach
                    class tickets during each year of the Term, for you and each
                    of your  immediate  family  members  residing in the foreign
                    location  for return to one  destination  in the U.S.  These
                    tickets cannot be used or exchanged for any other purpose.

13. Repatriation:   Upon  termination of your employment  except for termination
                    by United for cause as defined in Section  15, or unless you
                    voluntarily resign prior to the end of the term, the Company
                    will pay all repatriation  costs in accordance with United's
                    Expatriate  Repatriation  policy to one  destination  in the
                    U.S. Such  repatriation  allowance is subject to approval by
                    your supervisor.

14. Employee        You understand  that you may incur personal  expenses in the
    Receivables:    course of your  employment  with United.  These expenses may
                    include,  but  are  not  limited  to,  personal  phone  call
                    charges,  personal travel  expenses,  travel  advances,  and
                    amounts due as a result of the tax equalization calculation.
                    As a condition of your  employment  with  United,  you agree
                    that  United  may  deduct  expenses  you owe the  Company or
                    United   from  your   paycheck   at  any  time  during  your
                    employment.

                    You  may  be  provided  equipment  to  utilize  during  your
                    employment with United.  As a condition of your  employment,
                    you agree that upon separation from United,  you will return
                    such equipment. Any charges for damage done to any equipment
                    will be deducted from your final paycheck.  In the event any
                    equipment  is not  returned,  it will be given a fair market
                    value which will be deducted from your final paycheck. Also,
                    the Company may pursue  other legal  remedies  available  to
                    recover  the  reasonable  value of any items  damaged or not
                    returned.

15. Termination:    Although it is not  anticipated,  your  employment  and this
                    Agreement  may be  terminated  before  the end of its stated
                    assignment   length  with  or  without   cause.   Cause  for
                    termination  shall  include but not be limited to violations
                    of Company policy,  unsatisfactory  job performance,  sexual
                    harassment or other workplace misconduct,  misuse of expense
                    account,   falsification  of  Company  records,  or  similar
                    offenses.  Your  employment  and this  Agreement may also be
                    terminated  without  cause for any reason.  In the case of a
                    termination by the Company without cause,  before the end of
                    your  assignment  term,  however,  you will be entitled to a
                    severance  payment  equal to twelve  (12)  months  salary or
                    salary  through  the end of the  term  of  your  assignment,
                    whichever is less. As a condition of receiving the severance
                    payment,  however,  you  will  be  required  to sign a legal
                    release  giving up your rights to sue United and the company
                    to which you have been  seconded  for any reason  related to
                    your employment and separation from employment.



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<PAGE>

                                                            Employment Extension
                                                                      Bruce Mann
                                                              September 26, 2000



16. United          The Company may change, at its sole discretion, from time to
    Policies:       time, the provisions of benefit plans,  expatriate  policies
                    or other corporate policies.

17. Confidential    You will not, during or after your  employment,  disclose or
    Information:    use for the  benefit  of any  person  or entity  other  than
                    United or the  Company,  any United or Company  confidential
                    information   that  you  develop  or  receive   during  your
                    employment.  United  and  Company  confidential  information
                    shall include all trade  secrets,  research and  development
                    information,  product and  marketing  plans,  personnel  and
                    financial   data,   product  and   service   specifications,
                    prototypes,  software,  models,  customer  lists  and  other
                    confidential information or materials of United, Company, or
                    of others with whom United or the Company has a confidential
                    relationship.  You will promptly return all such information
                    and materials to United when your employment ends.

18. Severability    In case any one or more of the  provisions of this Agreement
    and Survival    shall be found to be invalid,  illegal or  unenforceable  in
    of Terms:       any respect,  the validity,  legality and  enforceability of
                    the remaining  provisions  contained in this  Agreement will
                    not be affected.  Further,  any provision or portion of this
                    Agreement  found to be invalid,  illegal,  or  unenforceable
                    shall be deemed,  without  further action on the part of you
                    or United,  to be modified,  amended  and/or  limited to the
                    minimum  extent  necessary  to  render  such  provisions  or
                    portions  thereof valid and  enforceable.  The provisions of
                    this  letter   regarding  trade  secrets  and   confidential
                    information shall survive the termination of your employment
                    by United.

19. Entire          This Agreement  contains the parties' entire  agreement with
    Agreement:      respect to your  expatriate  assignment  and  supersedes any
                    prior written or oral  agreements the parties may have made.
                    This  Agreement  may be amended  only by a written  document
                    signed by you, United and the Company.

20. Governing Law:  This   Agreement   and  all   aspects  of  your   employment
                    relationship  with  United are  governed  by the laws of the
                    United  States and the State of  Colorado  and all  disputes
                    concerning same will be resolved in Colorado.



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<PAGE>

                                                            Employment Extension
                                                                      Bruce Mann
                                                              September 26, 2000



If the above employment terms are satisfactory, please indicate your acceptance
of our offer by signing and returning three copies of this letter.


UNITEDGLOBALCOM, INC.                   AUSTAR UNITED COMMUNICATIONS


By  /s/ Michael T. Fries                By   /s/ John C. Porter
   --------------------------------        ----------------------------------
Its                                     Its  Chief Executive Officer
    -------------------------------         ---------------------------------
Date                                    Date 10 October 2000
     ------------------------------         ---------------------------------




ACCEPTED and AGREED:


/s/ Bruce Mann                             10/10/2000
----------------------------------         ----------
Bruce Mann                                 Date








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