Druscilla's 'naming all the stars' speech.
Druscilla: Pssst. We're going to destroy the world. Want to come?
From "The Harsh Light of Day"
Spike : He's got. What's the word? Vulnerability.
Buffy : And you with Harmony. What'd you do? Loose a bet?
Harmony : Hey!
Spike : Actually, how we met. It's a funny story.
Buffy : What's the matter Spike? Dru dump you again.
Spike : Maybe I left her.
Harmony : She left him for a fungus demon. That's all he talks about most days.
Harmony : You love that tunnel more than me.
Spike : I love syphilis more than you.
From "Something Blue":
Buffy: It's just so sudden. I don't know what to say.
Spike: Just say yes, and make me the happiest man on earth.
Buffy: Oh, Spike! Of course it's yes!
Spike: Well, first thing I'd say, we're not having a church wedding.
Buffy: How 'bout a daytime ceremony. In the park.
Spike: Fabulous. Enjoy your honeymoon with the big pile of dust.
Buffy: Under the trees. Indirect sunlight, only.
Spike: Warm breeze tosses the leaves aside, and again — you're registering as Mr and Mrs Big-Pile-of-Dust.
Buffy: Stop it! This is our wedding and you're treating it like a big joke!
Spike: Oh, pouty! Look at that lip.. gonna get it.. gonna get it..
Spike: This is the crack team that foils my every plan? I am deeply shamed.
(Spike, holding up one of Buffy's skirts — an orange one with orange fuzzy stuff around the bottom)
Spike: Wear this to the rehearsal dinner and the whole thing's off.
Spike: Well, I gotta have something. I still have Buffy taste in my mouth.
Buffy: You're a pig, Spike.
Spike: Yeah.. well I'm not the one who wanted, "Wind Beneath My Wings" for the first dance.