One scene that always bothered me was Kirk and Spock's seemingly indifference to the fate of the Scalosians at the end of "Wink of An Eye."
KIRK: What do you want us to do with you?
DEELA: Don't make a game of it, Captain. We've lost.
KIRK: If I sent you to Scalos, you'd undoubtedly play the same trick on the next spaceship that passed by.
DEELA: There won't be any others. You'll warn them. Your federation will quarantine the entire area.
KIRK: Yes, I suppose it would.
DEELA: And we will die and solve your problem that way. And ours.
[Cut to Transporter room]
DEELA: Now, what about your problem, Captain, and your Vulcan friend?
SPOCK: If you will devote yourself exclusively to the concerns of Scalos, madam, we shall be pleased to remain and take care of the Enterprise.
So Deela tells Kirk that the Scalosians will just die off, so 'nothing for you to worry about, Jimmy boy.' and how does the debonair captain reply? By offering Federation assistance? By assuring her that the Federation won't allow them to die off?
No and no! HE. SAYS. NOTHING. In trying to imagine what the silent Kirk must be thinking, somehow George C. Scott's line near the end of Patton about members of the Nazi Party being just like Americans joining the Democratic and Republican parties rings in my ears:
"Yes, that's about right."
Cold!
And what about Spock? The last line of dialog above might as well read:
SPOCK: If you will devote yourself exclusively to dying off, madam, we shall be pleased to remain and take care of the Enterprise.
Again, cold!