South Park: Season 10, Episode 13

10 - 13: Go God Go XII

Cartman is furious when his saviors in the future can't hook up the Nintendo Wii for him to play, so he makes a few phone calls to the past to try and prevent him from freezing himself. Of course, interfering with the past can drastically change the future, and Cartman may alter history forever. He also reveals a little secret that Ms. Garrison didn't want Richard Dawkins to know.