The Tholian Web is one of my favorite eps
I'm sure it'll be one of mines when I'm done re-watching the whole show.
In that ep, it's the first time we see that McCoy is starting to understand what Spock is made of (and it's there in the next ep, "Plato's Stepchildren". No reset button, that's nice). Why, they both even decide to lie to Kirk about the tape!
What's even better (to me, at least), is that I could totally picture the nuCast pulling those scenes off
1) The actors are very good
2) Yes, the characters were changed a bit, but their cores remain
2011 seems so far, far away