You dont have to agree with everything they do, but Southpark is the only show that are not afraid to discuss certains subjects. Dead Children should be mandatory to watch for every us citizens.
EDIT: In view of the many responses to this post, i'd like to add that if you really think south park is a right-wing show, you're showing your interchangeability. By that I mean that I firmly believe that people who are incapable of discussion and questioning their ideas are similar, no matter what side they're on. I'm convinced that if you'd been born in Texas into a conservative family, you'd be parading around in a pickup truck against drag queens in schools right now. It's simply a question of life context that makes you here now.