I thought it was really good. I didn't leave the theatre thinking I wasted $7.50. It was really fun and It is worth a watch. I thought the ending was really cool. I started think it was this cheesy over the top ending but then it completely flips you! It didn't drag like I thought the Davinci Code did, and it was put together alot better than the last one.
It goes sort of fast but you have to remember it all takes place in one night. So it has to.
I thought it had some very cool effects too.

Of course...I had extremely low expectations coming into the movie.