I really liked this movie. I think perhaps it is at least in part because I was watching "Fringe" at the time as well, so I felt like I saw was JJ Abrams was doing. For those that don't know or remember, one major point in Fringe is that the characters enter a parallel universe where they find out who they would have been and how they would have behaved had their life situation and personal histories been different. When I saw Into Darkness, I really felt like JJ Abrams was playing with this concept, so rather than "ripping off" Wrath of Khan, it was asking, how would THIS crew react to events similar to those in WoK. To me, it's like accusing Back to the Future 2 of "Ripping off" Back to the Future because Marty goes back inside the events of the first film to retrieve the Sports Almanac. Yes, the events are similar, but the characters and motives are very different.