The New York Times calls it
a meditation on the conflict between the streamlining tendencies of technological progress and the stubborn persistence of feelings and desires that can’t be tamed by utilitarian imperatives.
Roger Ebert says,
"Moon" is a superior example of that threatened genre, hard science-fiction, which is often about the interface between humans and alien intelligence of one kind of or other, including digital.
Variety has a review. It was screened at Sundance. The Vault of Horror thinks Rockwell deserves an Oscar.
366 Weird Movies
1/18/2009: The Crotchety Old Fan