This finally came to blockbuster and i'v been waiting for it. It was fucking awesome. Sam Rockwell is the shit, but he always is, and Kevin Spaceys voice worked great for gerdy. Check it out if you get a chance. Its sort of like castaway where Sam is basically the only character throughout the entire movie bar a few seconds of flashbacks and memories.
Good movie. The soundtrack by Clint Mansell is a plus, too.