The 2D opening scene was awesome, rest of the movie: shit. Sorry, but this one sucked, as all non-Pixar 3D films do. And yes, I've read the thread.
The fight scenes were shit, especially since the sound mixing was distinguished mentally-challenged and the punches made no sound effects. Add physical comedy that wears thin after the first 5 minutes of the movie is through, as well as metaphors about as deep as a rain puddle.
The magic behind Pixar is much more than the quality of animation and art, it's the writing. Every single Pixar film manages to fit in both children and adult humor without going to far in either direction, but keeping it subtle.
The writing in Kung Fu Panda was fucking distinguished mentally-challenged. To compare the film to Kung Fu Hustle is also absurd, since with Hustle you get Stephen Chow, a comedic champ, and with Kung Fu Panda you just get bad writing, forgettable characters and music, and a strange taste in your mouth.
EDIT: smh @ PD