I literally just returned from watching Get Him to the Greek with Russell Brand, Jonah Hill and Sean Combs. This is funny on par with The Hangover, Harold and Kumar go to White Castle, and Dude, Where's My Car?
Aldous Snow (Russell Brand), from Forgetting Sarah Marshall, is a rock star who has returned to drugs and alcohol and hasn't had a hit in quite a while. Sean Combs (genius) is the head of a music label looking for new talent. Johan Hill (so sweet and naive) works for Combs and suggests a comeback gig for Aldous Snow. Thing is, he has to fly to London, keep an eye on the troubled rock star and get him to LA in time for the big concert. Needless to say, hi-jinx ensue.
Rose Byrne plays Aldous' ex-girlfriend, and there are a ton of great cameo's. Russell Brand is wonderful in both his excess bad boy behavior and in his sweet broken caring moments. For no other reason than the party scenes in Las Vegas the movie would be worth it, but there are so many funny, quotable bits. Truly laugh out loud funny. Check it out.