What a great thread! Okay, I just thought of a few that haven't been mentioned.
In the beginning of Bargaining, when they're chasing the big vamp, and Tara says the whatever root was "supposed to confuse him, but it just made him peppy. Do you think he was taking prescription medication?" *giggle*
In Flooded, the whole "Dawn dong research scene". I love how Tara is being all maternal and facing off with Dawn's teenage logic. Tara's tone of voice when she hands Dawn the book and says "knock yourself out" and then her expression when Dawn says "That's a weird place for a horn....Oh, that's not a horn." Just perfect! *snicker*
In Tabula Rasa, when they all first wake up, Willow asks Xander why, if he doesn't know anyone, he was all "Ooo, hey". He says, "well I thought you were a girl and I'd remember." Before Willow says "I am a girl" she checks her breasts just to make sure.
And I know it's a) not W/T and b) so junior high of me, but, in Bargaining when Xander comes into the Summers house announcing "Not to worry house of chicks, I am a man, and I have a tool!"
Life is full of changes...The better you are at letting go of things, the freer your hands will be to catch something new. ~from Off The Map by Joan Ackerman
"It's good to be a chicken casserole," Tara murmured before passing out. ~from "Answering Darkness" by Sassette