Women will probably like this movie for George Clooney's butt, which he shows in a love scene. Men will probably like this movie for ending.
I'm a Sci-Fi buff, but this movie never gets there. There are unexplained deaths on a space station. Clooney, a shrink, gets sent to investigate. Once there, he stumbles onto his dead wife (or is she?). What's causing all this craziness? Well, don't look to the movie for answers, because it won't give you any.
There is a scene at the end of the movie that will remind you of "2001: A Space Odyssey", but this is no 2001. Thumbs down on this mess.