Finally saw it. Good flick, worth ten bucks, but doesn't live up to the hype.
The ending was like a cheap joke. I guess it was way too obvious too early in the movie that the final scene would go the "is it still a dream?" route so Nolan decided to completely cop out and not make a decision.
I was really hoping for some real twist ending that I didn't see coming a million miles away. For instance, wasn't it odd that Nash (Lucas Haas) just vanishes from the story? Presumably killed by the goons but I was waiting for his re-appearance to be part of the twist.
The movie dragged in places because of two problems: too much time with characters tediously explaining the rules of the game for the audience (solution: simplify the damn rules! they were too convoluted for a mere 2 1/2 hr movie); and too many gunfights and car chases. These characters are in a dream and can fight each other by any means imaginable. Falling back on Hollywood standbys is really the best they can do?