Every time I go back and watch an episode of Dinosaurs, I realize just how far ahead of its time it was (See: "What Sexual Harris Meant." Also the series finale.)
Also Tim Curry voiced a bunch of parts, which has nothing to do with the show's cleverly subversive political nature, but is wonderful nonetheless.
Here he is as the Devil in the fourth season episode "Life In The Faust Lane," in which Earl sells his soul in exchange for a collectible mug. Curry also played the voice of a very sassy jacket on another episode.