I think that it's always great to discuss movies after watching
You can watch the trailer here
EDIT: I have watched the movie now and whoa! What a movie!!
It was really an amazing piece of work; the actors, the music (by Hans Zimmer - love that composer!), the story and the scenery I've never watched a film that kept me feeling so excited during the whole movie. Incredible! ^O^ The story was really unique and interesting, and then again I love movies about dreams. You never know what is going to happen next, and I just love that feeling!
I really recommend this to anyone who like movies who make you think afterwards. It's so intense and deep!