I really liked
Moon. It reminded me quite a lot of
Silent Running, which is also a movie I really like. The whole aspect of whether the main character, Sam Bell, was alone and who/what he/they was/were unfurled gradually throughout the movie and kept me riveted to know more. GERTY (the computer) seems quite a control freak at times (reminiscent of HAL in 2001); this somewhat changes as more is revealed. I give it two thumbs up.