I've never been a big Star Trek watcher, but coming in here and seeing multiple posters swearing or promising they won't see ST2 because they cast a great English actor (Benedict Cumberbatch) as Khan is pretty hilarious. It kind of fits a cliché, because we all know everyone here will see that movie.
Now, I don't know much about the Trek universe, but apparently Khan was supposed to be a great Indian or Sheikh warrior? Did they even mention that in Wrath of Khan? In any case, Ricardo Montalban, a Mexican actor with prosthetic muscles never looked like that.
It's just really funny that people are complaining about the casting of a great actor as the villain in a movie.