Rented the Christopher Guest comedy For Your Consideration this weekend. Funny, if not quite up to the standard set by the Waiting for Guffman et al.
Some of the out-and-out funniest bits come from a British comedian/actress/ventriloquist I'd never seen before, Nina Conti. Here are some scenes and a long outtake I found on YouTube:
I've never seen a ventriloquist react so naturally with a puppet before--she seems genuinely surprised by what comes out of his mouth.