14. ‘The Hangover’ (2009)
Memorable quote: “There’s a jungle cat in the bathroom!”
Laugh factor: Everything about this movie could have been a disaster. It had no true star. It could be just another naughty-in-Las Vegas tale. But with a clever twist (the characters piece together their wild night in reverse) and the presence of laugh-a-minute comedian Zach Galifianakis, it was a monster hit. Now “The Hangover” T-shirts are sold in shops on the Vegas strip and Galifianakis, Bradley Cooper, and Ed Helms are legitimate movie stars. This wolfpack will have you howling.