I just watched Star Trek for the fourth time. The first two times were in the theater. I enjoyed the movie better on video only because some later action scenes were too loud in the theater.
In case you are not aware, Star Trek is the "reboot" of the old TV series and movies into a new series of movies. It follows the adventures of the old Star Trek characters when they were younger. In this particular series, the "reboot" happens when Romulins travel back in time and change the course of history resulting in the death of Captain Kirk's father. In this timeline, Kirk grows up without a father and is more of a miscreant. A series of events propel him into Starfleet and ultimately toward leadership. Along the way he has encounters and run-ins with other Star Trek characters, most noticeably a young Spock which the young Kirk doesn't like very much.
This is nearly a perfect movie. The execution from start to finish is brilliant. Every scene and every piece of dialog serves to propel the story along at a light speed. The opening shot is a slightly surrealistic fly-by of a Star Fleet ship cleverly letting us know that reality has changed; This is not your Daddy's Star Trek. It is cooler looking and more action packed, and more fun. The movie takes liberties with the Star Trek characters, but these liberties make sense and fit well in the context of the story.