You guys like movies with mind-bending twists and somewhat confusing endings? Recent movie box office numbers certainly seem to say you do. With that in mind, we'd like to call your attention to a slightly underground gem that you can now watch for free through Google Video.

 
Primer was released with very little fanfare back in 2004, but it's gotten a fair amount of street cred among fans of time travel and sci-fi as the years have gone by. Made with only $7000, Shane Carruth's tale of young engineers and paradoxes is a film that almost demands repeated viewings to piece together just what's going on. Sure, you could google the cheat sheet flowcharts that many of the movie's fans have put together, but where's the fun in that?

 
[via io9]