On June 15, 2000, a few months after Viacom (which CBS founded in 1952 as television syndication distributor CBS Films, Inc., and later spun off in 1971 after the then-recently implemented Financial Interest and Syndication Rules barred networks from holding financial interest in syndicated programming content) completed its $37 billion merger with CBS Corporation, CBS reached an agreement with new corporate sister Nickelodeon to air programming from its Nick Jr. television block beginning that September.
On September 16, 2000, the new three-hour block, Nick Jr. on CBS, premiered, replacing CBS Kidshow, which produced by Canada-based animation studio Nelvana. The block ended its run the week prior on September 9. For the first two years of the Viacom agreement, the block exclusively aired preschool-oriented programming from Nick Jr., including interstitials from the Nickelodeon block's animated mascot, Face, and other Nick Jr. interstitials. Nick Jr. on CBS did not air commercials aside from some Nick and CBS-related commercials and PSAs until early 2001. On September 22, 2001, the block received a rebrand based on the Nickelodeon block's new branding, adding Oswald and Bob the Builder. On September 14, 2002, the block was rebranded from Nick Jr. on CBS to simply Nick on CBS; at that time, its programming content expanded to animated Nickelodeon series aimed at children between the ages of 2 to 12, in addition to two Nick Jr. series.
As with the predecessor Think CBS Kids and CBS Kidshow blocks, all of the programs within the block complied with educational programming (E/I) requirements defined by the Children's Television Act, although the educational content in some of the programs was tenuous in nature. It was partly for this reason why some of Nickelodeon's most popular programs (most notably, SpongeBob SquarePants – at the time the cable channel's most popular series) were mainly not included as part of the CBS block, especially during the more open-formatted Nick on CBS era. However, Rugrats aired briefly in 2003, when it was added as a short-lived regular series within the block. Sometime in early 2004, the block had a relaunch, making additions like live-action shows, such as The Brothers García.
The older-skewing Nickelodeon series were removed from the block and the revival of Nick Jr. on CBS premiered on September 18, 2004, refocusing the block back exclusively toward preschool-oriented series. On September 17, 2005, the block added Go, Diego, Go! and began incorporating interstitial hosted segments featuring Piper O'Possum. On December 31, 2005, Viacom formally split under the shared control of National Amusements (owned by Sumner Redstone), with CBS and all related broadcasting, television production and distribution properties as well as some non-production entities becoming part of the standalone company CBS Corporation, while Nickelodeon and its parent subsidiary MTV Networks became part of a new company under the Viacom name.
Less than a month later on January 19, 2006, CBS announced that it would enter into a three-year programming partnership with DIC Entertainment to produce a new children's program block for the three-hour Saturday morning timeslot featuring new and former series from its program library, to begin airing in Fall 2006. On September 9, 2006, Nick Jr. on CBS ended its run and was replaced with a new block the following weekend called KOL Secret Slumber Party.
Following the announcement of the second merger between CBS Corporation and Viacom, former CBS Corporation CEO Joseph Ianniello was receptive to the possibility of the return of Nickelodeon children's programming to CBS. With CBS' contract with Litton Entertainment expiring, the return of Nick on CBS was announced during the Viacom/CBS remerging in June 2019. The Litton Entertainment-produced CBS Dream Team E/I programming block aired for the last and final time on September 7, 2019, and the revival of Nick on CBS replaced the block the following week, making it the very first time that Nickelodeon programs aired on CBS in nearly 14 years.
Unlike the original version, the revival block featured some of more Nickelodeon's more popular programs on the block (most notably SpongeBob SquarePants), as CBS during the time of the revival block's launch was trying to steer away from the usual E/I requirements despite that the block aired a handful of Nick Jr. shows that actually met such requirements like Abby Hatcher and Shimmer and Shine.
All of the programs aired within the block featured content compliant with educational programming requirements as mandated by the Federal Communications Commission via the Children's Television Act. Though the block was intended to air on Saturday mornings, some CBS affiliates deferred certain programs aired within the block to Sunday mornings, or (in the case of affiliates in the Western United States) Saturday afternoons due to breaking news or severe weather coverage, or regional or select national sports broadcasts (especially in the case of college football and basketball tournaments) scheduled in earlier Saturday timeslots as makegoods to comply with the E/I regulations. Some stations also tape delayed the entire block in order to accommodate local weekend morning newscasts, the Saturday edition of The Early Show or other programs of local interest (such as real estate or lifestyle programs).
However that was no longer the case when Nick on CBS began to expand into 4 to 5 hours within a few first months after the revival was launched, thus causing CBS This Morning Saturday to cease broadcasting with its final one on March 21, 2020.
Former Programming Edit
|Title||Premiere date||End date|
|Hey Arnold!||September 14, 2002||September 11, 2004|
|The Wild Thornberrys||March 6, 2004|
|As Told by Ginger||November 23, 2002|
|Rugrats||February 1, 2003||July 26, 2003|
|ChalkZone||September 11, 2004|
|All Grown Up!||March 13, 2004|
|The Brothers García||March 13, 2004||September 11, 2004|
|Blue's Clues||September 16, 2000||September 9, 2006|
|Dora the Explorer|
|Little Bill||September 7, 2002|
|August 2, 2003||March 6, 2004|
|September 18, 2004||September 9, 2006|
|Oswald||September 22, 2001||September 7, 2002|
|The Backyardigans||October 16, 2004||September 9, 2006|
|Go, Diego, Go!||September 17, 2005|
Acquired programming from Nickelodeon Edit
|Title||Premiere date||End date|
|Pelswick||September 14, 2002||November 23, 2002|
|Little Bear||September 16, 2000||September 15, 2001|
|Maggie and the Ferocious Beast|
|Franklin||September 7, 2002|
|Kipper||September 15, 2001|
|Bob the Builder||September 22, 2001||September 7, 2002|
|LazyTown||September 18, 2004||September 9, 2006|
|Miss Spider's Sunny Patch Friends||September 10, 2005|
Current Programming Edit
Programming from Nickelodeon Edit
|Title||Premiere date||End Date|
|SpongeBob SquarePants||September 14, 2019|
|The Fairly OddParents||September 12, 2020|
|The Loud House||January 18, 2020 (first run)
September 19, 2020 (second run)
|March 21, 2020 (first run)|
|The Casagrandes||September 19, 2020|
|Drake & Josh||September 14, 2019||March 21, 2020|
|iCarly||September 12, 2020|
|Victorious||March 28, 2020|
|Sam & Cat|
|Double Dare (2018 TV Series)||September 19, 2020|
|Shimmer and Shine||September 14, 2019||November 14, 2020|
|Sunny Day||March 28, 2020||November 14, 2020|
|Leah & Zac!||November 21, 2020|
|Shimmer and Shine: Genie Tales|
|Blue's Clues and You|
Acquired programming from Nickelodeon Edit
|Title||Premiere Date||End Date|
|Rainbow Butterfly Unicorn Kitty||January 18, 2020||September 12, 2020|