Holy jeebus I can't believe you guys didn't make a topic for this awesome movie. I haven't seen an R-rated film that has delivered the R-rated goods in a loooong time, but damn, this movie delivered. Nudity, profanity, Heather Graham's tit....mmm. Heather Graham seems like a total nympho.
And then there is Zach "Fat Jesus" Galifianakis who was FUNNY AS FUCK in this movie. I don't really like his stand up...but he delivered in this film as the oblivious, innocent, goofball funnyman. Ebert compared him to John Belushi and dammit, I agree.
Seriously though, there is no reason not to see this movie. Unless you don't like nudity and profanity. Even the wishy-washy Bradley Cooper who I want to hate so much was funny and awesome in this film. And Ed Helms of The Office fame was really enjoyable too. He did a piano performance in the movie which...well...was hilarious.
Again, I repeat, if you enjoy comedy, tits, profanity, The Office, movies about Vegas, etc., go see this film.