American Slang and Colloquialisms, with dragons

Please, never tell my boss that I used South Park as part of an ESL curriculum. But, a student wants to better understand spoken American English, colloquial speech, idiomatic expressions, and general fast-talk. He's also a young guy who works for Microsoft. At a loss for resources, I looked up a funny episode of South Park vs World of Warcraft. It's not overly offensive, disgusting, or repulsive, and is funny to techies and anyone who's obsessively playeda videogame.