I recently caught this on HBO. He starts off slow, but gets progressively funnier until he reaches his ultimate peak of hilarity. If you're into some of the more disgusting humor, Jim Norton is fucking fantastic.
This routine, Monster Rain, is one of the funnier ones that I've seen recently.
I ripped this off of the Xvid/Avi version and encoded it to mp3 because apparently there are no other assholes who just want to listen to comedy rather than watch it, so enjoy, and please seed.