Jimmy Neutron: Boy Genius (partially found TV promos for Nickelodeon animated film; 2001–2002)
When the Jimmy Neutron: Boy Genius movie was being released around 2002, Nickelodeon interrupted some of their shows with little gags to promote the movie. One such gag (supposedly) had the audio track on a Rugrats episode changed, another one giving the SpongeBob cast hair in the style of Jimmy's, and another one that is confirmed to exist had a SpongeBob SquarePants episode being made with puppets. At the moment, no footage exists, due to it coming on at random times. Only one (low quality) picture of the SpongeBob "puppet show" gag currently exists, and is said to be taken from the Season 1 episode, "Hooky".