Which Episode Did The TOS Stars Love Or Hate?

[Spock's Barber]

There have been numerous threads here that ask members which episode was their most loved or most disliked. That got me to wondering what the regular stars opinions were. Does anyone have any anecdotes about whether Shatner, Nimoy, Kelley, Doohan, et. al. expressed positive or negative comments about an episode?

For instance, Shatner was quoted as saying he liked any episode where he played dual roles because he got twice as much airtime, but I took that as a typical Shatner lighthearted comment.

Your thoughts?

 

[Maurice]

Kelley loved "The City On the Edge of Forever".

 

[ZapBrannigan]

Jimmy Doohan's stated favorite was "The Doomsday Machine." Grace Lee Whitney's was "Miri," because her kid was in it. Or kids, I can't remember.