If you like your humor broadside up, hold the subtlety, you’ll want to nurse this Hangover with your best buds. The ensemble cast meshes perfectly–it’s like a super-R-rated episode of Friends: silly, slapstick, and completely in the viewer’s face. When four pals go to Vegas to celebrate the imminent nuptials of one of them, they partake in a rooftop toast to “a night we’ll never forget.