He's pretty Cheesy, but I saw a guy called Tim Vine recently - he is (or at least was until recently) in the guiness book of records for most jokes per hour. Some of them are a bit weak, but he tells so many jokes you just laugh for an hour and the really good jokes keep you rolling past a couple of dodgy ones.

He only has on 'set' though, so once you've seen him once, that's it. He has a DVD out, which is worth checking out....

I also liekd the 'Mary Whitehouse Experience' - especially David Baddiel and Rob Newman - but they don't do that stuff any more. The wembley arena show is genius though....