The director of Old School returns with similar hijinks. Bradley Cooper, Zach Galifianakis and Ed Helms play a trio of friends who go to Las Vegas to throw their pal a crazy bachelor party. Only problem is, when they wake up the next morning, they've misplaced the groom and can't remember anything. Smart casting and a clever script make this mildly raunchy romp a generous party platter of manly laughs. 100 minutes R.