10. 'The 40-Year-Old Virgin'
It's hard to imagine how different the world of comedy would be today had The 40-Year-Old Virgin never been created. Not only was it a breakthrough film for Judd Apatow, it also turned Steve Carrell into a huge star. Before the movie came out, he was merely seen as the former Daily Show correspondent that had just struggled through a shaky first season of The Office. After it exploded, the show's producers learned how to present Steve Carrell's character as a more sympathetic figure, and the second season of The Office was absolutely stellar. There would be no Parks and Recreation or Community had that not happened. The movie was also a launching pad for Seth Rogen and Jonah Hill, two of the biggest stars in Hollywood today.