10. Mean Girls 2 (2011)
http://www.youtube.com/watch?v=V64B9WObjfg The original Mean Girls, penned by 30 Rock's Tina Fey, emerged as a nice surprise for anybody who sat down expecting a run-of-the-mill teen comedy, only to come to face-to-face with a snarling, bitchy and ultimately accurate take on high school life. And whereas that film possessed a certain charm, its sequel, Mean Girls 2, is about as entertaining as a slap in the face. Starring absolutely nobody you've ever heard of, the movie tells the story of Jo Mitchell, a tomboy who basically goes through a series of events that mirror exactly those of the original. In that sense, you've already seen Mean Girls 2, so you never need think about it again.