Pocket review: best Trek film since Wrath of Khan. Brilliant casting, loads of fun. I wish they'd let the movie stretch out a little longer, but that's a nitpick. Great to see Nimoy one more time.
On further reflection, you know what I liked best about this movie? They explicitly state that Kirk is smart. Really smart. He only looks like a meathead in the original series because he's standing next to Spock; in fact, he comes up with a lot of quick, effective solutions to impossible problems. Now, in the movie itself, he's never artificially stupid: he's "the only genius repeat offender in the Midwest", gets the literary references, knows how to program a simulation, and is really good at reading people.
Update: Henry Jenkins gives some conversation starters on Trek