Overall an excellent film, I felt the casting of Spock and McCoy were the highlight of an overall good group. The plot was at times thin although altering the timeline to reflect some of the subtle differences we will see in later films was a good use of the idea. I did feel the musical score could have been better. The trailer score was more fitting than most of the music within the film. I also wasn't too impressed with the "monster" scenes. It really didn't seem to fit.