I just noticed this list has an error.
The episode is Where No One
Has Gone Before. Political correctness, dontchaknow.
It's also my choice. Of the four that's left, it's the one I like the least. It's a great episode aside from the Roddenberry wankfest. So the character with his namesake is now a Mozart, going beyond space and time. Wonderful.
What gets them out of this mess is collective happy thoughts? This isn't Neverland.
Heart of Glory