With the release of yet another time travel movie this week (Project Almanac), it's time for us to look back at the great time travel movies of our past. Here are all the major time travel movies ever, ranked. Here are the rules: No animation. No short films. And no movies that where someone is frozen (or something) and then they wake up in the future (so Mel Gibson's Forever Young, Encino Man are OUT). Back To The Future (1985) A boy named Marty and his best friend a disgraced scientist named Doc build a time machine that takes Marty back to when his parents met. But then Mary messes it all up and his Mom falls in love with him and somehow he must foist her emotions onto his young father, or he will never be born. This is, the best time traveling movie ever made. Primer (2004) A complicated and very messy look into time travel. The premise is simple: two friends build a time machine. But the result is infinitely more complicated. Groundhog Day (1993) Bill Murray is stuck forever in a time loop in the small town Punxsutawney, Pennsylvania. And we all become better people for it. Back To The Future 2 (1989) Marty and the Doc reteam to go BACK TO THE FUTURE where everything is Nike, Pizza Hut, Pepsi Cola awesome. See then all via Io9.com.