"Supernatural" Mother's Little Helper (TV Episode 2014) - Mark Sheppard as Crowley

Crowley : [to Dean] You're lying to Sam like he's your wife, which kind of makes me your mistress.
Dean Winchester : I thought you were cleaning up your act.

Crowley : Well, I was going to, but then after very little soul-searching, I decided to embrace my addiction
Crowley : What's in that bottle? Delusion?
Crowley : I know that Cain gave you his Mark for a reason. And I know that rather than embracing it, rather than looking at it as the gift that it is, you're sulking like you lost your knuffle bunny.
Crowley : Just between us girls, how did you feel when you sunk the First Blade into Magnus' head?

Dean Winchester : Not half as good as I'm gonna feel when it's yours.

Crowley : Love it when you talk dirty.
Dean Winchester : What do you want?

Crowley : You tell me, Romeo. You rang. Let me guess -- you butt-dialed me?

Dean Winchester : Whatever the hell that is.
Jake : [about Dean] He did do exactly what you said he would. He saved you.

Crowley : Of course he saved me. We're besties.
Dean Winchester : Go to hell.

Crowley : Oh, if only.
Crowley : Last time we chitchatted, we agreed that you were gonna line up Carrot Top.

Dean Winchester : Yep, well... I'm on it.

Crowley : Unless Abaddon likes 10-cent wings, stale beer, and the clap, I doubt that she's here.

Mark Sheppard: Crowley