In Looper, writer-director Rian Johnson's (Brick) new time-tripping action thriller opening this Friday, Joseph Gordon-Levitt (JGL) plays a hitman ("looper") tasked with terminating his own future self (Bruce Willis), who is sent back in time so that there will be no trace of the crime in the future. Talk about a head trip! This plot has "time paradox" written all over it. If JGL kills Willis, wouldn't he remember that happening and try to prevent it from happening when he grows up to be Willis? And, if Willis kills JGL, wouldn't he simply cease to exist?
Looper isn't the first movie to delve into the complex moral and metaphysical conundrums inherent in time travel. In The Terminator, Kyle Reese (Michael Biehn) is sent back in time by John Connor, the future leader of the resistance against the machines, and ends up becoming Connor's dad. And in Back to the Future, Marty McFly (Michael J. Fox) goes back in time to save his friend and is almost erased from history when his mother (Lea Thompson) starts crushing on him. Help us rate the Top 10 Mind-Bending Time Travel movies.
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