Yeah, I saw it over the weekend and it was definitely a good movie. I wouldn't call it a great movie, but it is a fun action flick that's a readily enjoyable adventure. The story is pretty decent; it doesn't go very deep, but it doesn't have to, and they took a somewhat unorthodox route of meshing science and magic instead of pitting the one against the other. The action scenes are very good, easy to follow (no 'shaky-cam syndrome'), exciting, and look great (and there are a few subtle little effects that tie in with their explanation of magic and how it works, like the rippling distortion of the air emanating from a sorcerer's hand when 'pushing' an object around while working magic). The acting is good, and the younger cast members keep up with even experienced and well-established actors like Cage, and the humor is spot on, with good delivery and timing. It wasn't a laugh-riot comedy, and wasn't meant to be, but it did a good job of keeping our spirits up, and got the whole theater chuckling aloud more than once.
All-in-all, I'd give the movie an 8/10.