I love it when the bad guys get it in the end.
Kruge: A failure? The most destructive force ever created? You will tell me the secret of the Genesis torpedo.
Saavik: I have no knowledge.
Kruge: Then I hope pain is something you enjoy.
.
David Marcus: I'm sorry, sir. Just don't surrender. Genesis doesn't work. I can't believe they'd kill us for it.
Kruge: Admiral, your young friend is mistaken. I meant what I said. And now to show that my intentions are sincere, I shall kill one of the prisoners.
Kirk: Wait a minute! Give me a chance to talk.
Kruge: [in Klingon] Kill one of them. I don't care which.
Evil Doc Brown.