I'm not the submitter, though I did gush about it on the POEN movies board in April. Its one of a handful of films that make me want to spend money on a Blu-ray player.
Meh..the movie's OK. It has really great visuals and some good ideas, but it's really poorly written, I think. Towards the end it really lost cohesion for me. The story-within-a-story mechanic works best when the real-world is minimized as much as possible. It also doesn't help that the story-within is so fantastic and outlandish that it's far more interesting than the real-world story.