Wow, hadn't even heard of this one until its release on dvd/bd. Managed to snag the blu-ray from Blockbuster.
It's a "western" set in the Australian Outback starring Guy Pearce. Basic premise is that his two brothers and some other folks are in a gang. He and his younger brother are captured and "the proposition" is that he must kill his older brother by Christmas or his younger brother will hang.
It's kind of a slow burner, and it's very violent and bloody. Not for the kids (or potentially the spouse). However, I really liked it. Overall it was an impressive movie. I don't suggest purchasing this without a rental. I won't be picking it up due to re-watchability but I do really recommend seeing this if you can.
http://www.imdb.com/title/tt0421238/Anyone else seen it?