Re: Which movie is most like a TOS episode?
I'm going with The Search for Spock
Thematic similarities with Amok Time
about friendship and sacrifice plus I think Christopher Lloyd is my third favorite Klingon behind Kang and Kor, an absolute scene-chewer in the best TOS tradition.
"I tell you what you all need, you need to take a thirteenth step, down off your high horse." - Hank Hill, King of the Hill