4. 'Star Wars Episode V: The Empire Strikes Back'
Science fiction fans don't agree on very much, but there does seem to be a general consensus that The Empire Strikes Back is the best of the six Star Wars films. The original movie had a lot of backstory to sort through and Return of the Jedi has lots and lots of Ewoks. Enough said. Also, not to speak ill of the brilliant George Lucas, but the fact that he didn't direct Empire was probably also a good thing. It's the movie where Luke trains to become a Jedi, Han gets frozen in carbonite and Darth Vader tells Luke he's his father before chopping off his hand. Every second of the thing is awesome and it's currently Number 13 on IMDB's Top 250 movies of all time.