Another “TOS” fan here. I’m sure I’ve driven many family members crazy watching all those reruns.
The funny thing is that I loved NextGen, DS9, and at least some of Voyager and Enterprise when they came along. I love the characters but I can’t seem to really enjoy those series in reruns. But the Original Series is still fun to watch. Oh, I liked the animated series too.:o In fact I really like the animated one where Spock goes back in time to save himself as a child. The animation wasn’t very good but the stories were okay.
I confess I never really thought that much of City on the Edge of Forever (the Joan Collins one). I don’t dislike it; I just don’t REALLY like it. I do think that this episode was important in sci fi lore, however. It popularized the idea that the past can’t be changed without affecting the future. (I think they call this the grandfather effect or something like that?) Unfotunately Enterprise fell in love with the idea of playing with the ‘time continuum’ and largely ruined it for me.
I did like the Trouble with Tribbles. And I liked the Mirror universe one. DS9 also had fun with that idea without *over-*doing it.