Hadn't seen it for quite some time, so dug out the dvd of this:
Directed by David Twohy (and co-written by Darren Aronofsky) it's a nice, moody and stylishly shot little film (in that sense it's not unlike Twohy's Pitch Black, the first and only good Riddick movie). If you haven't already and is going to see it, avoid reading about it before hand.
Great cast, too. Among it, I was surprised to recognize this guy, who I really wasn't familiar with on my last viewing: