Say what you will about Beavis and Butthead and King of the Hill, but Mike Judge's movies have gotta be some of the funniest ones out there. Office Space is a classic and his new movie, Idiocracy, is one of the funniest movies I've seen in some time. If you haven't seen it already, I highly recommend renting it.
I was and still am a huge Beavis and Butthead fan. My wife hates them though. I like King of the Hill too but I am surprised that its stayed on TV this long when other Fox cartoons like Futurama got shitcanned.