Just saw it today. Not as funny as 'The 40 Year Old Virgin', 'Knocked Up' or 'Superbad', but it was still very funny in places, particularly the "noisy sex" scene, Russell Brand's face was priceless, lol.
Don't let the fact that Brand is in it put you off though, i can't stand him normally, but he was actually pretty good in this, and perfectly cast for the character he portrayed.