more core educational programming. ABC, which had recently been acquired by Disney, introduced One Saturday Morning for the 1997–98 season. It featured a mix of Disney animated series, educational interstitial segments (including a history-oriented segment starring comedian Robin Williams, reprising his role as the Genie from Aladdin), the educational series Science Court, and a flagship wraparound program (Disney's One Saturday Morning). ABC stated that four of the block's five hours would be branded as E/I programming. One Saturday Morning quickly became the top Saturday morning block in terms of viewership, until competition from Fox Kids and Kids' WB began to erode its audience. CBS relaunched its Saturday morning block for the 1997–98 season as Think CBS Kids, with a focus on live-action educational series such as The New Ghostwriter Mysteries, The Weird Al Show (which only unwillingly, and with great difficulty, complied with the E/I mandate as a condition of being picked up), and Wheel 2000—a children's version of the game show Wheel of Fortune. For the 1998–99 season, the block was relaunched again as the CBS Kidshow; it featured animated adaptations of children's books from Canadian studio Nelvana, which were co-commissioned with Scottish Television. NBC had already abandoned cartoons as Saturday morning programming in 1992 with the introduction of TNBC, a block that featured live-action teen sitcoms. By 2001, TNBC's viewership had seen major declines in its core demographic, while the median age of its viewers was around 41. Outsourcing of programming In the 2000s, multiple networks began to outsource their Saturday morning blocks to sister cable networks and third-parties. Following the network's acquisition by Viacom, CBS introduced Nick on CBS in 2000, which was programmed by its new sister Nickelodeon. The block primarily focused on preschool programming from the Nick Jr. brand, but from 2002 to 2004 the block targeted a broader youth audience (after 2004, the Nick on CBS block had returned to a preschool audience) . NBC partnered with cable network Discovery Kids to replace TNBC with Discovery Kids on NBC for the 2002–03 season, which featured factual entertainment programming and educational cartoons (including the first animated programs aired by NBC's Saturday morning lineup since the TNBC era). In 2001, Fox and its partner Saban Entertainment sold Fox Kids' assets—which included the Fox Family cable channel—to Disney; the network subsequently began to phase out the Fox Kids block, and gave its weekday daytime timeslot back to