12. 'Galaxy Quest' (1999)
You may remember Galaxy Quest as a genius Star Trek parody featuring the cast of a cheesy outer-space TV show (Tim Allen, Sigourney Weaver, Alan Rickman) thrust into a real interstellar adventure — and not as a time-travel movie. But one of the central pieces of technology in the film is the Omega 13 device, which turns out to be a time machine, albeit not a particularly flexible one: It sends its user 13 seconds into the past. That may be the smallest increment of time travel in any movie, but it turns out to be just enough time to save the day.