South Park is decent. Just remember that Beavis and Butthead gave first.
Beavis and Butt-head was funny, but South Park has become much more than just a bunch of toilet jokes. The humor is so much more intelligent, it's sharper and more offensive than B&BH ever was.
B&BH was one of the greatest shows ever to warp my fragile adolescent mind, however I agree with Ryan...the jokes on South Park are intelligent and the delivery they use is outstanding.