Go see this movie now.
I just got back from seeing it, and it is one of the most amazing movies i have seen in the past few years. Most original movie concept i've seen probably ever. This is what movies should be, not crap like twilight and transformers.
Go see it
Edit: As requested further down the thread, I ask that no direct spoilers be talked about, as not to ruin the experience for those who haven't seen it yet