Just got back and it's totally worth seeing! Not quite as good as Pitch Black, but still a good movie. It was also not a rehash of Pitch Black, which I apprecated. There were some elements that were familar, but it's Riddick and "friends" trapped on a hostile alien world, so yeah, there are some familar things. Still, it's a good movie on it's own. I liked the structure of the story and they did a great job with atmosphere. Totally worth seeing in the theater.