Here are a few of mine:
The best monment of the series:
Jonathan Levinson: But whenever there was a problem or something creepy happened, you seemed to show up and stop it. Most of the people here have been saved by you or helped by you at one time or another. We’re proud to say that the class of '99 has the lowest mortality rate of any graduating class in Sunnydale history, and we know at least part of that is because of you. So the senior class offers its thanks and gives you, uh, this. It’s from all of us, and it has written here: Buffy Summers, Class Protector." …
[To Glory]
Spike: Yeah … but it was fun. And guess what, bitch. I’m not telling you jack. You’re never gonna get your sodding key, 'cause you might be strong, but in our world, you’re an idiot.
Glory: I’m a god.
Spike: The god of what, bad home perms?
Glory: Shut up! I command you to shut up!
Spike: Yeah, okay, sorry, but I just had no idea that gods were such prancing lightweights. Mark my words, the Slayer … is going to kick your skanky, lopsided ass back to whatever place would take a cheap, whorish, fashion victim ex-god like you.
Buffy: Spike, what are you doing here? Five words or less.
Spike: [Counting each word on his fingers] Out. For. A. Walk. . . Bitch.
Here is the fruit punch speech:
Anya: [crying] I don’t understand how this all happens. How we go through this. I mean, I knew her, and then she’s, there’s just a body, and I don’t understand why she just can’t get back in it and not be dead anymore. It’s stupid. It’s mortal and stupid. And, and Xander’s crying and not talking, and, and I was having fruit punch, and I thought, well, Joyce will never have any more fruit punch ever, and she’ll never have eggs, or yawn or brush her hair, not ever, and no one will explain to me why.
And the Spike and Willow scene mentioned above:
[Spike cant bite Willow]
Spike: I don’t understand. This sort of thing has never happened to me before.
Willow: Maybe you were nervous.
Spike: I felt al right when it started. Well let’s try it again.
[Spike tries to bite Willow and he backs off screaming in pain.]
Spike: Damn it! What’s wrong with me?
Willow: Maybe you’re trying too hard. Doesn’t this happen to every vampire?
Spike: Not to me it doesn’t!
Willow: It’s me isn’t it?
Spike: What are you talking about?
Willow: Well you came here looking for Buffy, and settled. You didn’t want to bite me, I just happened to be around.
Spike: Piffle!
Willow: I know I’m not the kind of girl vamps like to sink their teeth into. It’s all ways, “ooo, you’re like a sister to me,” or “oh, we’re such good friends.”
Spike: Don’t be ridiculous. I’d bite you in a heartbeat.
Willow: This doesn’t make you anymore scary.
Spike: Don’t patronize me. I’m only 126 years old!
Willow: Your being too hard on yourself. Why we don’t wait a half an hour and try again?
Cordy’s best moment ever:
Lyle Gorch: I’m gonna kill both you Slayers for this! You hear me?
Cordelia: I hear you, you redneck moron! You got a dress that goes with that hat?
Lyle Gorch: I’m gonna…
Cordelia: Rip out my innards, play with my eyeballs, boil my brain and eat it for brunch? Listen up, needle brain, Buffy and I have taken out four of your cronies, not to mention your girlfriend.
Lyle Gorch: Wife!
Cordelia: Whatever. The point is, I haven’t even broken a sweat. See, in the end Buffy’s just the runner up. I am the queen. You get me mad, what do you think I’m gonna do to you?
Lyle Gorch: [runs away] Later.
Anya: You’re going to die if you stay here.
Xander: I guess I might.
Anya: When I think that something could happen to you, it feels bad inside, like I might vomit.
Xander: Welcome to the world of romance.
Anya: It’s horrible! No wonder I used to get so much work.
Principal Snyder: It’s fuzzy-minded liberal thinking like that that gets you eaten.
Buffy: Who are you?
Angel: Let’s just say, I’m a friend.
Buffy: Yeah, maybe I don’t want a friend.
Angel: I didn’t say I was yours.
Giles: We’ll get our memory back, and it will all be right as rain.
Spike: Oh, listen to Mary Poppins. He’s got his crust all stiff and upper with that nancy boy accent. You Englishmen are always so…bloody hell.
[Counting on his fingers]
Spike: Sodding, blimey, shaggin, knickers, bollocks. Oh, God. I’m English.
Giles: Welcome to the nancy boy tribe.
Xander: Blackmail is such an ugly word.
Amy: I didn’t say blackmail.
Xander: Yeah, but I’m about to blackmail you, so I thought I’d bring it up.
Pain personified:
Riley Finn: Hey, I’m well aware of how lucky I am. Like, lottery lucky. Buffy’s like nobody else in the world. When I’m with her, it’s like I’m split in two – half of me is just on fire, going crazy if I’m not touching her. Other half is so still and peaceful, just perfectly content. Just knows: this is the one. …But she doesn’t love me.
Xander: Oh Look, demons. Don’t see those everyday. . . . . . unless you’re us!
[Standing before the gang as they prepare to leave to fight evil hell-goddess Glory]
Buffy: Remember: The ritual starts, we all die; and I’ll kill anyone who comes near Dawn.
[turns and leaves the room]
Spike: Well, not exactly the St. Crispin’s Day speech, was it?
Giles: [picking up remaining weapons] We few, we happy few…
Spike: …we band of buggered.
Tara Maclay: Best birthday.
Willow: I still can’t believe you didn’t tell me about your family and all that.
Tara Maclay: I was just afraid if you saw the kind of people I came from, you wouldn’t want to be anywhere near me.
Willow: See… that’s where you’re a dummy. I think about what you grew up with and then I look at what you are. It makes me proud. It makes me love you more.
Xander’s speech to Dawn was really grat as well- just can’t find the text of it right now.