South Park: Season 3, Episode 13

3 - 13: Starvin' Marvin in Space!

When an alien ship crashes in the African desert, Starvin' Marvin finds it, picks up the South Park boys, and flies to the ship's home planet, Marklar. Starvin' Marvin wants to go back for his people and bring them to Marklar, where there is plenty of food. The CIA is hot on his trail, and a Christian group learns of the aliens and wants to go to Marklar to convert them.