South Park would DEFINITELY be Ni (it makes a living of tearing down people who think they have a monopoly on truth/take their perceptions too seriously). Which is strange, because everyone always wants to type the creator as ENTP.
Its also funny that you note King of the Hill. I think I might be the ONLY person I know who likes that show. No one else (that i know irl) seems to "get" the humor like I do... Its all about knowing the world views that the show mocks/pays tribute to.
Family Guy I think could be Se or Ne. The little cut away scenes are definitely Ne in seeing the possibilities. However, there is a definite "immediate reaction" "overly bold" humor that most Se people tend to appreciate.
What would this be:
[YOUTUBE="N4JBj0kxef8"]What Function is this???[/YOUTUBE]