These lines were cut from Inca Mummy Girl:
Giles: “You’re twisting my words.”
Buffy: “No, I’m just using them for good.”

The following lines were deleted from Inca Mummy Girl:

Ampata: “He has a way of making the milk come out of my nose.”
Buffy: “And that’s good?”

This line of Angel’s was deleted from Lie to Me:
“Yeah, I eat too. Not for nutritional value – it just kind of passes the time.”

The following exchange between Kendra and Buffy was deleted from What’s My Line? (Part 2):
Kendra: “Your English is very odd, you know.”
Buffy: “Yeah – it’s something about being woken by an ax. Makes me talk all crazy.”

A line cut from Willow and Xander’s conversation about the Captain and Tennille was:
Willow: “I’m just saying that if Tennille were in charge, she would have had the little captain hat.”

The following conversation was deleted from the final cut of Surprise:
Jenny: “I guess it makes sense. I mean, all of Buffy’s senses are heightened. Why should her intuition be different?”
Giles: “Precisely. It’s not unheard-of for the Slayer to start having prophetic dreams and visions as she approaches adulthood.”
Jenny: “Adulthood? Buffy’s …

The following scene was cut from the episode Innocence, I assume the “Gypsy Man” was Jenny’s uncle:
Gypsy Man: “You! Evil one”
Angel: “Evil one? Oh, man, now I’ve got hurt feelings.”
Gypsy Man: “What do you want?”
Angel: “A whole lot. Got a lot of lost time to make up for. Say, I …

Xander says in Go Fish, “Swim team. Hardly what I call a team. The Yankees, Abbott and Costello. The A. Those were teams.” He’s referring to the comedy pairing of Bud Abbott and Lou Costello, the baseball team The Yankees and 80’s action TV series The A Team.

When Buffy and Willow discover that Jenny has been killed in Passion, we don’t hear the whole of their conversation, as it’s covered by a voice-over. Here’s the scene:
Willow (referring to “the talk” with Joyce): “So was it horrible?”
Buffy: “It wasn’t too horrible.” (phone rings) “Hello?”
Giles (on phone): “Buffy?”
Buffy: “Giles! …

Joss’s stage directions for Becoming (Part 2) included: “Yes, it’s sunrise. Sue me.” This is because it’s very tricky to capture sunrise on film, but Joss wanted it all the same.

The following line of Joyce’s about Principal Snyder was deleted from Dead Man’s Party:
“Have you ever noticed his teeth? They’re like tiny, little rodent teeth – horrible gnashing little teeth. You just want to pull them out with pliers.”

Buffy and Mr. Trick had the following exchange in Faith, Hope and Trick, which was cut for length:
Mr. Trick: I believe this dance is mine.”
Buffy: “The music stopped.”
Mr. Trick: “But the beat goes on. Gimme whatchya got.”

The following conversation was cut from the episode Homecoming:
Buffy: “Okay, how ’bout… you vote for me and I don’t beat the living crap out of you?”
Jonathan: “That works for me.”
Buffy: “Tell your friends!”

Just before Buffy used the gas pipe to destroy the demon in Band Candy she said, “I love that you guys love torches”. This line was deleted from the final cut of the episode.

Giles says to Buffy in Revelations, “sadly, I must remind you that Angel tortured me… for hours, for pleasure…” referring to the events of Becoming (Part 2).