It was... kind of average. I didn't really enjoy it, myself. It's been a while since I've seen it, but I remember thinking the plot left something to be desired. It was an interesting concept, but I don't think it was executed very well. Though, if you're looking for mindless entertainment in an action movie and a lot of special effects, this is your film.

I do enjoy watching a pissed off Samuel L. Jackson. Oooh lord.