I'm with Kriggy. I actually went to the midnight premier, but have been too lazy to type up anything until now. I had pretty high expectations (obviously, since I wouldn't bother dealing with the dregs of public transportation at 3 am if I didn't), and the movie didn't quite live up to them. I was expecting more psychological mindfuckery, and with an original concept like Inception had, they could've done a lot more. I mean, Ellen Page could create any kind of dreamscape imaginable, and she came up with a snowy mountain and an exact replica of New York City? The movie didn't really explore any psychological traps they could use on people, the mental consequences of going into other people's dreams, moral issues, etc. It didn't even acknowledge the exponentially increasing amounts of time the characters supposedly experienced as they went deeper into the dreams. And the only character who had any kind of background at all was Leonardo Dicaprio, and his character was basically exactly the same as Leo's in Shutter Island, only less likeable. Seriously, the guy was a dick the entire time and by the end I really didn't give two shits about his guilty conscience.
But it definitely wasn't a bad movie... I'd probably watch it again because of the cool imagery and whatnot, but it certainly wasn't as good as I had hoped.