Top 50 funniest movies of all time
13. This is Spinal Tap (1984)
Memorable quote: "These go to 11."
Laugh factor: Got a thing for drummers? Be careful, they have been known to spontaneously combust. Writer-star Christopher Guest's later movies ("Best in Show," "Waiting for Guffman," "A Mighty Wind") follow the same unscripted model employed through much of "Tap," but the film's influence cuts deeper. Other filmmakers are still trying to capture the magic of this brilliant off-the-cuff banter, most notably Judd Apatow.