Discovery Kids on NBC was an American children's programming block that aired on NBC from October 5, 2002 to September 9, 2006. The block was produced under a time-lease agreement with Discovery Kids, and features a mixture of live-action and animated series originated on the cable network that met educational programming requirements defined by the Federal Communications Commission. History In December 2001, NBC reached a partnership with Discovery Communications, in which its cable channel Discovery Kids would produce a new three-hour Saturday morning block for the network that would feature programming that met the educational programming guidelines enforced by the Children's Television Act. The block would replace TNBC, a block of live-action series aimed at a teenage audience whose creation was motivated by the success of its series Saved by the Bell. By 2001, TNBC had been undergoing from declining viewership; according to Nielsen Media Research, the block was registering a median viewer age of 41. Discovery Kids on NBC premiered on October 5, 2002, with its original lineup incorporating three new original series (the Survivor-style reality competition series Endurance, and the scripted series Scout's Safari and Strange Days at Blake Holsey High) and one existing Discovery Kids program (Operation Junkyard); the following year, Trading Spaces: Boys vs. Girls, a child-oriented spin-off of the TLC home renovation reality show Trading Spaces joined the lineup. The new block came about amidst growing children's programming synergies between broadcast and cable television networks. Prior to the Discovery agreement, CBS had launched a Nickelodeon-branded block in 2000 (following Nickelodeon parent Viacom's merger with CBS), while The WB had begun combining programs from sister channel Cartoon Network onto its Kids' WB lineup as part of a growing cross-promotion arrangement between the cable channel and the block; in addition, one month before Discovery Kids on NBC premiered, ABC relaunched its Saturday morning block as ABC Kids, expanding upon a programming agreement established in 2001 with sister network Disney Channel that later included select programming from both Toon Disney and (in 2004) its own action-oriented block Jetix. On November 1, 2003, the block introduced educationally-oriented animated programs under the banner "Real Toons" – with two series, Kenny the Shark and Tutenstein; this marked the first time that NBC had aired animation as part of its children's programming lineup since August 1992. Transition to Qubo In March 2006, Discovery declined to renew its contract with NBC for its