1. Terrance and Phillip in Not Without My Anus
Season 2, episode 1
At the end of season 1, viewers were promised that the identity of Cartman's father would be revealed. But instead Parker and Stone devoted the season 2 opener to flatulent Canadian comedians Terrance and Phillip.
Matt Stone: I love that
episode. It’s so f---ing weird, and it's so different, and the fact that nobody else really liked it makes me like it more.