I watched that Richard Pryor chap on Youtube earlier.
I can see where Chris Rock would get his inspiration from, they're both very funny.

/Sitting on the fence
( Bats, Mon 1 Jun 2009, 15:26, archived)

Richard Pryor's sketch about fighting Ali and shooting his Car are two of my favourites ever :)

( Donkey Gums @mattcomedy, Mon 1 Jun 2009, 15:27, archived)