I love Star Trek VI: The Undiscovered Country. But it took me out of the story to hear there's a "Vulcan proverb" that "Only Nixon could go to China," and Klingons quoting Shakespeare.

I love Star Wars, but right from the start, when I saw it at 17, I wondered how the director could not decide whether the primary supporting character's name was pronounced "Han" or "Hahn."

What are the little details in TV and movies that are like fingernails on a chalkboard to you?