Why would people not admit to watching South Park? It's an awesome show, and second-to-none when it comes to social commentary.

South Park took a few seasons to really hit its stride -- as well as being in a comfortable enough position for the writers to say whatever the smurf they wanted. Seasons 5-10 are overall pretty stellar (though the earlier seasons have some classics as well), and the South Park Movie is just fantastic. I don't think the recent seasons are quite as good as the middle ones, but South Park still comes up with some gems (the scathing episode satirizing the NCAA comes to mind).