I watched PRIMER two and a half times tonight. Director/Crew Commentaties, etc. It's a really good, mind bending tale of time travel and anomalies, paradoxes and so on. Going back in time for selfish reasons and then going back and fixing it and back and back. Trust and friendship come into it too. I loved it. It's worth a couple viewings. The message boards at IMDB have blurbs from people who understand it up and down, so if you get lost--check there. It's puprosefully hard to follow and will take some noodle action, but it's a lotta, lotta fun.