I had wanted to see this in the cinema, but first it never came to our local cineplex, and then when it did arrive briefly we just couldn't get an outing organised. However, I pre-ordered the DVD and I just checked it out the other day and damn - it's a good movie.
Straight into my top films of 2009 list, this flick plays like old school 1970s science fiction, the kind that happens to take place beyond our planet, but which tells a (good) story that isn't really about the setting or the technology. Films like Silent Running (an excellent 70s sci-fi flick) is where Moon situates itself, and that should justify pretty damn sharpish why it's a great little film.
Sam Rockwell gives another interesting and entertaining performance, the use of models (touched up with CGI) gives it a retro air that really works for it, the script is tight and really gets you thinking, and the direction is similarly spiffing.
A seriously quality piece of filmmaking.