Firefly

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5. Serenity 2005, Joss Whedon

The plot: River Tam and her brother Simon are hiding out from the totalitarian government that experimented with River’s brain aboard the space-freighter Serenity. It is really pleasing to see such high quality sci-fi being produced still. This is a must-see movie.

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http://listverse.com/movies/top-20-geek-movies-of-all-time/