The writers must have interviewed countless of people with every “Have I got a Vegas story for you,” in order to come up a premise that has all the usual elements…a tiger, a baby, a wedding, a missing Benz, a missing tooth, a missing groom, Mike Tyson, and a hangover. Trying to retrace their steps on the morning after the night before, Doug (Justin Bartha) is the groom to be married in forty-eight hours. For starters, he’s missing. His three best friends Phil (Bradley Cooper), Stu (Ed Helms) and Alan (Zach Galifianakis) are trying to find him. But they have their own set of emotional issues.  The gorgeous one (Cooper) has his act together, while Stu is a nerdy hen-pecked dentist who pretends to be a doctor. And Alan has is a bit twisted, to say the least. He should clearly stay away from gambling, booze and small children.  Every time you think you’ve had enough, the movie unravels more problems.  Heather Graham rounds out the cast as a stripper turned “somebody’s” wife (plot spoiler). This is the “Wedding Crashers” of 2009. Except in this, and by the time you leave the theatre, you’ll be exhausted from laughter, but also from feeling like you got the black eyes and headaches right along with each of them. Not sure if that’s a good thing. But it’s definitely the comedy to beat this year.  Three and a half tiaras