I was surprised to see Lemmy on this show Down and Dirty as the house DJ, very surprised in fact.

http://www.hbo.com/events/down-and-dirty/index.html

He sings the theme song and he interacts with Jim Norton a few times throughout each episode.

As for the show itself, I hate Jim Norton because he's very irritating and not particularly funny. I do like blue humor sometimes but I don't think a lot of this is clever, just...gross.