At dinner before seeing the movie, I called what it was about. I was just joking and didn't intend to ruin the movie for everyone, but the idea behind Moon is pretty simple. Regardless, you will enjoy it.
We traveled across town to the arthouse cinema, where all the employees lean on one elbow upon whatever is available and look out with superior eyes through side swept hair and half closed eyelids at all the hopeless sheep milling about on their consumerist paths, to see moon. I did not buy popcorn. A silent finger showed me where the parking validation machine was. There were 12 people total in the theater, but I think the movie had been out in my town for about 3 weeks. At the end, everybody seemed equally ambivalent about what just happened.
It was cool, but I think we all just felt like there was something else, a magic or a soul, if you will, that the film was missing. We sought Moon out because the trailer looked stunning and we all love Sam Rockwell. Mr. Rockwell is in full form and you never get tired of seeing him on-screen... which is actually the entire duration of the film. The score, by Clint Mansell (Requiem for a Dream) is quite stirring and the voicing of the robot by Kevin Spacey is a lot of fun, but still I wasn't as satisfied as I wanted to be.
It may just be that I was expecting too much, but here's what could possibly be the fault: You get to the kicker too soon and then it goes exactly where you expected it to over the course of the next hour. We were all surprised that the movie was only 1.5 hours, because it felt more like 2. It's not a slow film, but the reveal of what is happening occurs in the first act. The whole second act is playing with the reveal and when the third act comes, it's like going through the motions. Everything has already been telegraphed to you. Like when the masked magician revealed the secrets to everyone's favorite magic tricks on network television. It was thrilling to watch, but in the end you just didn't feel right.
I still suggest seeing this film in theatres if you have the chance, because Sam Rockwell telegraphing the final act to you is quite enjoyable.