Existing STAR TREK fans who loved 2009's STAR TREK will enjoy STAR TREK Into the Darkness. Those who became fans because of the 2009 film will have a good time, but may come away feeling like they weren't as "in" on it. It's hard to talk about this film without giving away anything crucial.
One thing that made the 2009 film wonderful was it's strong character development and ability to reach out to fans of film rather than targeting the "Trekkies." It wasn't a members only club. Everyone was welcome, and you didn't need to know the secret hand shake of password.
New fans have had four years to catch up on all things TREK (if they were so inclined). INTO THE DARKNESS seems to bank on the idea that they have. If there was a check list of things the fans wanted that they didn't get four years ago, this film checked all the boxes. This is both delightful and teetering on dangerous. STAR TREK: Nemesis alienated (pardon the sci-fi pun) potential viewers by being too fan-centric, which hurt the over all story. This film doesn't quite go to those levels, but it could have. There is a substantial amount of action, so it's definitely not boring. The references to TREK past do, occasionally, knock us out of the film.
SHERLOCK's Benedict Cumberbatch is well cast as The Enterprises newest foe. More detail would require major spoilers, and this film should be experienced spoiler-free.
I strongly suggest to anyone wishing to see this to see it very soon before your friends ruin it for you.
Think of the films you've seen by Chris Nolan (Memento, Insomnia, Batman Begins, The Prestige, Dark Knight)... think of your least favorite among them. Chances are, his worst movie is still better than Michael Bay's best.
Nolan is a master story teller. The dream worlds created for the film are built with cutting edge effects. In the hands of a lesser director, the effects would overtake the screen and the story would be lost. Every detail in this film serves it. It's one of those pieces that is so layered (both blatantly and subtly), that it demands repeat viewings.
Here at the midpoint of 2010, this is the best film I have seen so far this year. Definitely the best big-budget studio release I have seen in a long time.