The KHAAAAAAAAAAAAAAAAN part was a little weird, it was probably better placed than Kirk's KHAAAAAAAAAAAAAAN though and led into Spock kicking ass. I really enjoyed it, better than Trek 2009 and there was probably even more fan service than previous. The opening felt more like a TNG plot and they handled the prime directive stuff well - I always thought it was dumb they'd let a civilization die.
Kirk was a bit of a pussy though, I know he is still supposed to be immature but he didn't seem to be a particularly good Captain yet.
I liked the warp core though, at least I think that was the actual warp core.