Just saw Duncan Jones' debut flick Moon and I loved every minute of it. Sam Rockwell deserves an Oscar for this and Clint Mansell's soundtrack is perfect. It would have been so easy for Duncan Jones to call up his dad, David Bowie and say "Hey pop, you want to write the soundtrack?" and although I'm a pretty big Bowie fan, I'm glad he went with Clint Mansell. With such a minimal, "simple" and quiet film, the soundtrack sticks out and accompanies the cinematic mood perfectly.
It's a great psychological, mystery sci-fi that's an homage to 2001 but is clearly a different movie. In fact (and I know I'll take some flack for this), 2001 stinks, nay, STINKS compared to Moon.