Xander: "'Are you a people person, or do you prefer keeping your own company?' Well, what if I'm a people person who keeps his own company by default?
Buffy: "So, mark 'None of the above'."
Xander: "Well, there are no boxes for 'None of the above.' And that would introduce too many variables into their mushroom-headed, number-crunching, little world."
Willow: "I'm sensing bitterness."

Willow: "I'm kinda' curious to find out what sort of career I can have."
Xander: "What, and suck all the spontaneity out of being young and stupid? I'd rather live in the dark."
Willow: "You're not gonna' be young forever."
Xander: "Yes, but I'll always be stupid."
Buffy & Willow: "..."
Xander: "Okay, let's not all rush to disagree."
Buffy: "You're not stupid."

Cordelia: "'I aspire to help my fellow man.' Check. As long as he's not smelly, dirty, or something gross."

Xander: "Cordelia Chase, always ready to give a hand to the rich and pretty."
Cordelia: "Which, lucky me, excludes you. Twice."
Xander: "Is murder always a crime?"

Buffy: "My Dorothy Hamill phase. My room in LA was pretty much a shrine.  Dorothy dolls, Dorothy posters. I even got the Dorothy haircut, thereby securing a place for myself in the Geek Hall of Fame."

Kendra: "Who are you?"
Buffy: "Who am I? You attacked me! Who the hell are you?!"
Kendra: "I'm Kendra...the Vampire Slayer."