I went last night to the 12:01 premiere, and I actually thought it was decent. I think a lot of people will be disappointed in it, it is a little bit cheesy. A few of the dialogues are chessy lines that you've seen in every bad movie.
The action is cool, with slow motion sequences that are pretty detailed. I personally haven't played the game, but my friend said it strayed pretty far off the storyline of the game. But if that makes the movie better then they should do it.