The most recent Star Trek movie was, I confess, a disappointment. It was extremely entertaining, but as
summercomfort 's husband said, it was sort of a fanfiction of classic Trek. One reason fanfiction works so well is that everyone writing and reading it all share a common background. You don't need to waste time describing Kirk's previous romances, for example, when an expression like "The woman in the soup kitchen" would evoke all the tragedy that more traditional fiction would need to have set up with pages and pages of possibly superfluous backstory. When this shared frame of reference is used well, it can make even very short stories much more powerful than stand-alone fiction, because very small references are pre-loaded with emotional punch. The problem arises when writers depend on the shared background to carry the emotional weight of the story, rather than writing it in themselves, and that's what JJ Abrams has done.
( Here be spoilers! )
( Here be spoilers! )