I went last night to see it around 9:30 pm. I didn't see it in 3D because I don't have depth perception, so the 3D glasses wouldn't do much for me.
I thought it was awesome...not really on the classic epic level of Star Wars or Lord of the Rings, but definitely a great movie. I'll get it on BluRay for sure when it comes out. One of the things I liked was that there were so many "new" ideas as far as the setting and characters, what the planet was like, etc. I love it when I read a book or see a movie and see something that is totally new or different. I won't put any specific examples here because I don't want to put out any spoilers.
It is so cool that so much of the movie was computer-generated because it didn't really seem like that at all. There really isn't any limit with what can be done in movies now, if the producers have a big enough budget. (Another example would be the Transformers movies, which I thought were totally awesome).
The only thing that bugged me about the movie was that sometimes the camera would focus on something and then zoom in. I think it was distracting because it kind of reminded me that I was watching a movie, so I'd be pulled away from the story for a second or two.
On an unrelated note, I saw a preview for the Prince of Persia movie. I've never played the game, but that movie looks sweet.