I think PT 1970's Carolyn Loomis may be Nancy Barrett's best work on the series (although I have to confess to being very fond of her work as RT's Carolyn, as well--we really get to see her grow up on the show). There was a sophisticated edge, a depth to the character, that was brought alive beautifully in Barrett's performance. Her last two or three shows in that storyline in particular have a kind of quiet pathos that stands in sharp relief to a lot of the OTT stuff going on around her.
Brilliant work. Thanks for starting this thread.
Steve