Damn I love South Park. Its nothing but a spoof on cultural stereotypes. They magnify the riduculous nature of society's "issues" to show how ridiculous it can become.
My favorite episode features a gateway from the future that opened up in South Park. From this gateway people from the future came and "Took are jobs". Of course these people were Illegals and their nickname was Goobacks.
Here is a medley of the "finer" points of the episode.
http://www.youtube.com/watch?v=KLni3wbndls