Death at a Funeral
I saw this last weekend with a friend of mine. It honestly was the funniest movie I have seen all year. It's got a bunch of minor actors in it, several of whom you recognize, but nobody huge. I think that makes it more enjoyable.
It's classic dry British humor. It's one of those movies where just when you think things can't get any worse for the characters, they do. And the results are hilarious.
It's R-rated for regular use of the f-bomb and a naked male hiney. If you don't have issues with either of those, I highly recommend the movie.