It's no World War Z (complete turd), but it sure tries hard to be a mashup between 1982's Star Trek II and Transformers. The movie is more of a "whiz-bang" action movie that just *happens* to have some Star Trek stuff in it. I quite enjoyed 2009's Star Trek, which was an homage to the older series, and had some great time travel/alternate reality stuff in it. Unfortunately, I found this sequel to be much less enjoyable, probably because it rips off so much in an attempt to appeal to fan nostalgia. That, and it really leans far too much on the relentless action as a crutch, while what should be the true legs of the film (character development and plot) wither a bit.
ST: Into darkness is actually a pretty passable action flick, if you like things moving around so fast that it distracts you all the time from following the plot, much like the Transformers movies. (Man, each time I promise myself I won't go watch another one, but then I do anyway)
One of the main characters resigns from his post for ethical reasons for all of 20 minutes. Another is demoted for perhaps 15 minutes before being reinstated to his original post. Another main character dies - for about 10 minutes before being brought back to life just like in the comic books, completely negating any meaningful reaction from fans to his death and noble sacrifice. The movie is chock full of very temporary changes like this, to the point of aggravation.
Doctor McCoy's lines are pretty funny through the movie - until they start to overdo it - and then you start to wince as they keep pushing it more and more, and he just seems like an annoying stand up comedian.
You know that a movie is kind of bad when your wife turns to you a little more than halfway through and jokes about a zombie tribble turning into the first Borg, and you turn to her and respond with "You will be assimilated - cooo!" We usually only do that sort of thing with the really bad movies, when we're bored.
You get the feeling while watching the movie that Paramount didn't learn a single lesson from Star Trek Nemesis. No, we don't want you to simply copy an old successful movie from the series so that you can make more $. We want a completely new plot, for once. (how about a sequel to another old episode, like you did with Space Seed?) Oh, there were some surprises this time around that kept it from quite sinking to that level, but overall that was what they were trying to do here.
If I had to list my LEAST favorite Star Trek movies, in order from the one I liked the least, it would be something like this:
Star Trek Nemesis (ripoff, bad plot, weak villain)
Star Trek: The Motion Picture (much too slow)
Star Trek: Into Darkness (whiz-bang fast, parody of itself, ripoff plot)
Star Trek V: (unbalanced, silly God story, happy vulcans)
Star Trek III (a whole movie about undoing the previous one)
I guess after watching Star Trek: Into Darkness, I would suggest that Trek fans instead try one of these:
[L=http://en.memory-alpha.org/wiki/Star_Trek:_Invasion!]http://en.memory-alpha.org/wiki/Star_Trek:_Invasion![/L]
or
[L=http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&fi...]http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=star+trek+collective[/L]
(any of the first 6 results would be excellent viewing, depending
on your personal preferences)