I intentionally learned as little as possible about this movie, ignoring TechTV's features and innumerably previews. When I actually saw it this afternoon, I VERY MUCH enjoyed it.
Also... DONT READ SPOILERS!!!!!!!! There is too much that happens, and the "oh!" factor is lost if you see it coming.
I don't consider myself a trekkie (or trekker, or whatever they call themselves) but I do follow the story, and this installment was very well done. Not too big (blow up the galaxy), not too small(personal vendetta) but comfortably in the middle.