The Hangover (15)

Two days before he walks down the aisle with his beautiful bride, Doug heads for Las Vegas with his three best buddies, Phil, Stu and Alan. Several hours of heavy drinking and wild partying ensue and in the morning, Phil, Stu and Alan wake with pounding headaches and no memory of events of the night before. A trashed hotel suite and the presence of a mystery baby are the first signs that something is dreadfully wrong; the absence of the groom-to-be is a close second. As the three friends retrace their alcohol-fuelled steps, they realise how much trouble they are in.