Question: Which two-hour programming block geared toward older audiences was originally hosted by Nick Cannon?

Context paragraphs:
Public Genomics: Public genomics is a genomics branch that was initiated by public organizations such as governments, discontrol centers, and the UN.  Public genomics is effectively the public facet of personal genomics.  While personal genomics is geared more toward genomics resource personal and maximize the utility of genomics for the people, public genomics is geared toward to manage genome information and facilitate a more systematic and fair use of genome information in the society.

Heroes &amp; Icons: Heroes & Icons (H&I) is an American digital broadcast television network owned by Weigel Broadcasting.  Primarily carried on the digital subchannels of its affiliated television station in most markets, it primarily airs classic television series from the 1950s through the 2000s, with a focus on westerns, crime dramas, sci-fi, and action-oriented programming geared toward male audiences.

TNBC: TNBC (or Teen NBC) was an American teen-oriented programming block that aired on NBC from September 12, 1992 to September 7, 2002.  The Saturday morning block featured live-action series – primarily in the form of scripted teen sitcoms – geared toward teenagers and young adults, the majority of which were produced by the network's in-house production units NBC Studios and NBC Enterprises.

TEENick: TEENick was a teen-oriented television programming block that aired on Nickelodeon.  The block launched on March 4, 2001 and lasted until December 14, 2008.  TEENick aired on Sunday nights from 6-9 p.m. ET/PT and, beginning in 2004, began to also air on Saturday nights from 8-10 p.m. ET/PT (replacing the popular SNICK block that started in 1992).  It was originally hosted by Nick Cannon, and then by Jason Everhart (a.k.a. "J. Boogie").

The Nick Cannon Show: The Nick Cannon Show is an American television comedy spin-off of "All That".  It aired on Nickelodeon's SNICK block 2002-2003 along with "All That", "The Amanda Show" and "Taina".  The premise of the semi-scripted show was that its star, Nick Cannon, a former cast member on "All That", would come across a situation he thought needed changing and then "take over" to make things better, or at least funnier.  After production and crew changes occurred in the second season, the program suffered from low ratings and was canceled in February 2003.  On November 11, 2013, iTunes release volumes 1 and 2 of The Nick Cannon Show with a total of 19 episodes.

The Disney Afternoon: The Disney Afternoon was a created-for-syndication two-hour animated television programming block, produced by Walt Disney Television Animation, with distribution through their syndication affiliate, Buena Vista Television.  Before and after its cancellation, the shows in the block were rerun both on Disney Channel (during the mid-to-late 1990s) and on Toon Disney (all of them between the channel's launch in 1998 and 2004, with some remaining until as late as 2008).  Starting on October 2, 1995, four of the shows ("Darkwing Duck", "TaleSpin", "DuckTales", and "") were rerun on Disney Channel as a two-hour programming block called "Block Party" which aired on weekdays in the late afternoon/early evening.  Several of the block's shows are available on DVD in the United States.

Nickel-O-Zone: Nickel-O-Zone was a one-hour programming block on the American cable television network Nickelodeon, geared toward older (preteen to teen) audiences, that ran from August 31, 1998 – 2000.  It was aired on Sunday-Friday 8p and ended at 9p.  ET.

Nick Cannon Presents: Short Circuitz: Nick Cannon Presents: Short Circuitz was a sketch comedy show starring Nick Cannon on MTV that debuted April 5, 2007.  The show was cancelled and pulled from MTV on April 30, 2007, due to low ratings.  A month after the show's cancellation, the series returned on June 7, 2007 as part of the Nick Cannon Power Hour, but was soon cancelled again.

Xploration Station: Xploration Station is an American syndicated programming block that is programmed by Steve Rotfeld Productions, operated by Fox, and debuted on September 13, 2014.  It airs weekends (typically on Saturday mornings), primarily on Fox-affiliated stations.  Aimed towards teenagers, the block consists of four half-hour shows focusing on the STEM fields of science, technology, engineering and mathematics.  All of the programs in the two-hour block are produced to meet federally mandated educational programming guidelines (stations carrying the block continue to provide E/I-compliant programs acquired from the syndication market to comply with the full three-hour requirement defined by the Federal Communications Commission for television stations to devote to educational programming each week).

SNICK: SNICK (full for Saturday Night Nickelodeon) was a two-hour programming block on the American cable television network Nickelodeon, geared toward older (preteen to teen) audiences, that ran from August 15, 1992 until August 28, 2004.  It was aired on Saturdays starting at 8 p.m and ending at 10 p.m. ET.  In 2004, SNICK was revamped as the Saturday night edition of TEENick.  Nickelodeon continues to run a Saturday night programming block today, though since the TEENick name was removed from the lineup in February 2009, the block no longer goes by any name.

Supporting paragraphs: TEENick SNICK
Answer: SNICK