Primer: For those who liked movies that really make them think

[acidic_liquid]

Donnie Darko made me think. And there are all those other movies with cool surprise twists at the end that made me think and understand the movie in retrospect. And then there's Primer. I've watched it twice, and I still don't fully grasp in. Thankfully, after doing a little research online, I found out I'm definitely not alone.

Has anyone else seen this?