I saw the previews for this when I went to see, I think, Return of the King, and immediately thought, "Ooh. That looks fascinating." Problem was, they gave away THE main twist in the previews and on the back of the box when it clearly wasn't meant to be revealed until about thirty-five minutes into the movie. So if you haven't seen any of the previews or read the back of the box, I won't say anything about it. :-) All I'll say is that this movie is pretty great, although I think it would have been better had a more talented actor than Ashton Kutcher taken the lead role. That could have been one FASCINATING role... And if you rent the DVD... director's cut is far better than the theatrical release. I watched the theatrical ending and was like, "HEY! They cheated!"