I like sci-fi movies that expand your mind and make you think a little more. I found this movie frustratingly slow to get going and keep your interest. I just saw it at a dollar theater and am glad I didn't pay full price when it first came out. The basic concept was interesting. The best of the movie is in the last 45 minutes. I have to admit that I was expecting better - I purposely didn't read the IMDb customer reviews beforehand as I didn't want any spoilers or preconceptions. I really wanted to like this movie more, but sadly I didn't. There were so many parts of the story that were hard to follow and understand at times. Obviously from the ratings I'm in the minority. I would say this is a movie for real sci-fi buffs and enthusiasts. Not a bad movie, but not a great one either. But judge for yourself - this is only my opinion.