In case you didn't know John Hodgman, the guy most famous for playing "PC" in the Apple Commercials, has a comedy book called "The Areas of My Expertise". I haven't read it but the consensus seems to be you either think it's really funny or that it sucks.

Regardless, an uber-extended audiobook edition is now a free download from the iTunes store. Warning: it's nearly seven hours long. While a seven hour audiobook of any sort sounds pretty excruciating, I've seen a couple of comments that this more closely resembles standup and sketch comedy than a traditional audiobook. It's free though so what the hell...