Re: The SINGLE GREATEST MOMENT in TOS !!!
I don't think this would count as "single greatest," but a moment that resonated with me was the end of The Man Trap - largely regarded as a not so great episode - when Kirk coments, "I was just thinking about the buffalo." I think that elevated that mediocre episode into an episode of substance.
In all the history of the world, a riot has NEVER broken out at a Sci-Fi convention.
"It's a fucking TV show!" - Gary Lockwood