Futurama is an animated science-fiction comedy show, which was also created by Matt Groening. Numerous references have been made to the show throughout the run in The Simpsons as well as Futurama making references to The Simpsons. Many people have compared the Futurama main characters with the main Simpsons characters such as Bender is Futurama's Homer. A running joke is that on The Simpsons, Futurama is a fictional cartoon show. On Futurama, however, it is The Simpsons that is a fictional cartoon show. The show originally aired new episodes on Fox until cancellation, but moved to Comedy Central (as well as reruns) when it was un-cancelled. However, it was canceled again.