I own his HBO standup DVD and I've seen him in concert. He's HYSTERICAL.
Have you seen him do standup before? He does a riotous bit about how women pick out greeting cards. What a funny funny thing! He's got the BEST facial expressions. He doesn't even need to talk--- in fact for about 3 or 4 minutes during the card bit, he doesn't. I can see that a million and a half times without getting tired of it.
That's like Dana Carvey's "Choppin' Broccoli" bit. Hee! I'm peeing my pants right now thinking about that one...
And my other favorite comedy bit was the Blue Oyster Cult Saturday Night Live sketch. OMG. How FUNNY! And they were cracking up the whole time....
I think it's the best when they actors/comics crack themselves up! Remember the Carol Burnett show... that was a crack team and they were always laughing....