Although a few parts were strangely reminiscent of Good Will Hunting, overall this movie was really good, and very entertaining. The chase scenes, in particular, were stellar.
I never rate things, and I'm rating this. See it on IMAX - it's worth the extra $$. The movie is totally fun even if you're not a Star Trek fan and unfamiliar with the old shows, but it's also fun to know a few of the shout outs they make to the originals. Go see it!