2. The Hangover The Hangover broke box office records following a tidal wave of positive word-of-mouth online, tweets proclaiming its hilarity, and great reviews. The ballsy buddy film set a new record for an R-rated comedy, smashing the record set by Beverly Hills Cop 25 years ago. As of December 2009, The Hangover had amassed $277 million during its domestic theatrical release, and who knows how much more it'll take in on DVD/ Blu-ray. Why the fuss? Because The Hangover has just about everything thrown into it - a chicken, a tiger, a baby, Mike Tyson - and it all works. Ed Helms, Bradley Cooper, and Zach Galifianakis take every joke as far as possible and then go further, and the result is laugh out loud funny.