If one good thing comes out of The Hangover, it'll be turning comedians Zach Galifianakis and Ed Helms into viable movie stars. They're both very funny guys, and here they do their best with a not-particularly-good script from the screenwriters of Ghosts of Girlfriends Past and Four Christmases. The problem with The Hangover is that it peaks too soon; early on, it succumbs to over-the-top ridiculousness, then keeps trying to top itself. About halfway through, it becomes repetitive, and then it just slides into monotony. by Ned Lannamann