I had completely forgotten the bit in "immunity syndrome" where Spocks hears voices crying out and being silenced! Okay, so it's canon in TOS too, just apparently was ignored for a long time. Though since Who and TOS origanally aired at the same time, I wouldn't be suprised if there was canon bleedover, too; the way the two shows drew their advanced, scientific, touch-telepathic, deeply conservative cultures with their half-human renegade-only-not has a lot in common, which I was noticing even before they both decided to destroy their home planets. :P

I had blocked out "All Our Yesterdays"; there's nothing more guaranteed to hit my embarrassment squick than "Vulcans losing control". (Though, oddly, Quinto!Spock doesn't trigger it nearly as much, maybe because it's obvious he was never quite as indoctrinated by passion's-mastery in that universe. Or maybe because he chews the scenery slightly less than Nimoy or Lenard...)