My wife and I saw Terminator Salvation over the Memorial Day weekend and were thoroughly disappointed at the lack of character development. There's only one significant storyline and no new revelations about SkyNet or John Connor. We were fans of previous Terminator movies, but this one doesn't measure up. The movie moves from one set of gunfire and explosions to the next. There is so little effort put into character development, that you don't really root for John Connor or anyone else. You just sit and watch the explosions.
As a long-time Star Trek fan, I was very skeptical about going in the direction of a prequel, and about having new actors take on the Kirk, Spock, McCoy roles, but I was extremely pleased with the results. J.J. Abrams and his writers did an excellent job blending the Trek history with the new story and charting a new course for the Star Trek franchise.
The combination of action, storyline and spectacular special effects makes this a movie anyone can enjoy whether they've ever even heard of Star Trek before or not.
I can't remember the last time I saw a movie twice in the theater, but I just might go watch this one again. It's that good.