1) Fantastic movie.
2) I'm scared because it's going to dominate popular discourse on "levels" as psychological architecture. Before, it was an idea relatively unique to video games -- specifically, the awesomeness that was Psychonauts, complete with subconscious censors that try to kick you out, etc. -- but now? Psychonauts will be ripping off Inception. Radiator will be ripping off Inception. We are all now in its shadow.
And that scares me because, quite frankly, I don't think I can craft an experience as satisfying as that film.
Hell, now I feel like I'm ripping off Inception. I wonder why. Did it plant something in my brain?...