Just got back from a showing. I nerded everywhere. It was fantastic.
The special effects, the soundtrack, the minor sound effects that nobody really pays that much attention to... It was like some sort of melodious, sensory buffet to an aspiring vfx artist like myself.
One of the best things about the experience, however, was the old guy sitting to my left. Dude was as giddy as a small child throughout the showing. Made watching the movie so much better.
My only complaints would have to be:
The action scenes were egregiously destructive, and far too drawn out; almost as if to say, "Hey! Look at my effects budget! LOOK AT IT!". As they dragged on, they caused a sense of detachment, weakening the immersion that'd built up prior to them. This left me feeling, as Zhaboka said, somewhat underwhelmed. This didn't detract too much from the film, though. Just a minor grievance.
Also, Zod didn't command anybody to kneel before him. That was disappointing.
Epic film. Now, one of only three that can actually make me emotional.