I thought I better turn in my "I saw the new Star Trek movie report. This is generally spoiler-free.
First off, I can't imagine how difficult it is for an actor to play another actor's character. while there's a little bit of room for doing your own thing, it's the moments when you nail it that it really works. Zachary Quinto was phenomenal as a different kind of Spock (though I confess: at first I had a hard time seeing him as anyone but Sylar from Heroes). Chris Pine was okay as Kirk. The final scene was the only real moment of recognition for me, though there were other moments where he was really trying. McCoy was dead-on in some moments, less so in others. Scotty was also excellent. I feel more ambivalent about Chekov (the voice was spot-on, but the hair was distracting), Sulu (generally good, but nothing particularly amazing), and Uhura (I think they felt the need to "empower" the character; she looked great, but I didn't feel a connection; also, there's some plot stuff with her that's maybe too weird).
The plot is good, but gives lots of room to complain. Some of it is a little facile and silly (but then so was the TV show). I think the writers wanted to create something new without violating the canon). I think they succeeded (and what a monumental task, considering!). There were a few things here and there that I snerfed at, but overall it was a rollicking good ride, lots of stuff blew up, there was plenty of good humor, and it was an opportunity for a new adventure with characters I love. A lot of it is origin stuff, so I'd like to see a sequel, though this is the last Star Trek that will ever feature Majel Barrett (she's in every incarnation of the show ever made). And who knows how long Leonard Nimoy will last. His role in this was just right and exactly needed to make the passing of the baton work.
Die-hards will likely call foul on many a detail, but I've always been an easy fan (which is why I never liked Next Generation: it was too snobby for my goofy "space western" tastes).
It's worth a watch whether you're an old fan or never even saw an episode in all your life. That's a pretty major accomplishment, so overall I give it the thumbs up.