although I'm a horror fan I'm certainly not into things like Saw and Hostel which are absolutely vile.
I strongly agree, JB. At a certain point you have to wonder why you're watching something. Vile is a terrific word for those sorts of films. Personally, I just don't get the appeal, but no offense to anyone who does.
None of the three episodes you mentioned bothers me to that extent, though. The torture is obviously uncomfortable to watch, but it's in service of some interesting concepts and helps develop the K/S/M troika, or just Kirk and Spock in "Whom Gods Destroy." (And actually, I never really understood why the BBC banned that one—was it the rather stark portrayal of mental illness?)
@Ssosmcin — that's good stuff about "Charlie X"; thanks. I really struggle with early S1, and as an airdate watcher, it's jarring to see so many plot elements repeated back-to-back between "Charlie" and "Where No Man Has Gone Before." Honestly, add in the uneven nature of "The Man Trap" and "Mudd's Women," and it's sort of surprising that the show drew such a cult following so fast. But "The Naked Time" and "The Enemy Within" were just that good, and Shatner and Nimoy were both so compelling from jump despite, as you said, the early weirdness.
In other news, it's always interesting to me how divisive "Spock's Brain" is! I think it's extremely funny and entertaining. Like "A Piece of the Action" and "I, Mudd," I don’t think it's meant to be taken too seriously.