It was OK. I don't see why everyone loves it so much. It wasn't very smart or deep or well-directed.
I really wanted to like this movie. I feel terribly cynical trashing it, and that's why I'm giving it a middling 5. Actually, I'm giving it a 5 because there were some superb performances.
While it doesn't offer any answers, it both thrills and makes you think.
The story, direction, characters, and writing/dialogue is akin to taking a tranquilizer shot to the neck, but everything else was so well done.