Thoroughly enjoyed it. It was a nice mix of nostalgia and re-imagining. Don't bother staying past the credits, there is no teaser for the next one - though I'd be surprised if they don't make another.

Simon Pegg was great as Scotty, and the Bones character was a very good Deforest Kelly impression.

As good as it was, if I were honest - I would admit that if I came into this movie knowing no Star Trek canon, it would seem very muddy and confusing. This is a movie for people who know Trek lore - and enjoy little moments of "aha, I see what you did there".