This might come as a shock, but looks like I'm the respectable adult in this situation.

Sorry about that. Your breasts are fantastic. I wouldn't change a thing.

Teddy: I wanted to talk to you about breast implants.
Mark: Good for you! It crossed my mind the first time I saw you, but I didn't think you'd go for it.

I wanna build a life and a family. And I'm not wasting my time on someone that doesn't share that interest.

Callie: Find a grownup that you like and date, like a grownup.
Mark: I don't know what that means.

Derek: Screwing drugs reps isn't gonna make you feel better.
Mark: Yeah, it is.

That's the Sloan nose. Can you see it? That's my dad's nose! He's got the Sloan nose ...

Mark: Torres, you know anything about putting together cribs?
Callie: You got a crib?
Mark: Sloan's coming home this week and I got one and I put it together but it wobbles. It can't wobble!
Callie: You're like a sweet dad now. I hardly recognize you.
Mark: Who's that new blonde over there? I may be a dad, but I'm still a single dad. Excuse me.

Mark: Ahhh! What did you do to your hair?
Lexie: I changed it! [pauses] You thought I was someone else. And you were hitting on me! You are pathetic, and hypocritical and slutty.

[to Lexie] You can't pull it off! Blondes are either bad ass or fun. You're ... you're a brunette!

I'm not the one whose immature. And you made me wreck my skin graft.

Mark: I made a bet she wouldn't make it down that aisle. Won $50.
Owen: What aisle?
Mark: You never heard that story? That's a good story.

Grey's Anatomy Quotes

Did you say it? 'I love you. I don't ever want to live without you. You changed my life.' Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around; Drink it in 'cause this is it. It might all be gone tomorrow."

Meredith (closing voiceover)

Derek: I am calling post-it, Zola, Bailey, the tumors on the wall, ferryboat scrub caps. I thought D.C. was everything. I was wrong. You... you're everything. I love you and I'm not going to stop loving you. I can't live without you. I don't want to live without you, and I'm going to do everything in my power to prove it.
Meredith: I can live without you, but I don't want to. I don't ever want to.