Izzie: I'm on Hunt's service. Anything that turns surgical down here is mine.
Cristina: You don't need the hours. You just spent the last 6 months in the O.R.
Izzie: Unconscious on a table does not count!

Bailey: (to Meredith during her surgery) I had five interns. Four of you have been on this table. One of you has cancer, one of you died. You better not pull anything funny on me, Grey.

Meredith: (to Thatcher) You're the guy who used to pour my cereal in the morning. That's it. That's all I remember about you. You're not my father. You're just the guy that used to pour my cereal, and if you die, it probably won't change my life that much, but it will change hers. (looks at Lexie) If you die, it will break her, and I'm not gonna let you do that. I don't know what it's like to have a father, but I do know what it's like to have a sister, and it's good. And if we can get through this, then the door will be open for us to get to know each other. The door's open.

Lexie: So I'm gonna be fired. I've done a lot of really dumb things today, including pulling your medical files.
Meredith: Lexie.
Lexie: Just listen. I didn't want to do this. I didn't want to have to come to you for anything. Ever. So I thought if I looked up your blood type, and it was the wrong one, then that would be it. Then I could just stop thinking about it, but I can't, because you have his blood. And I know that he's not your dad. I know that he was never there for you, and I'm... I would never ask you to give him anything. He doesn't deserve a thing from you. He doesn't. But he's gonna die, Meredith, and so I'm asking you to give something to me. I'm asking ... I'm asking you to give me my dad, because as crappy as he was to you, he was wonderful to me. He never missed a single dance recital. He was there at my fifth grade graduation, and what is that? That's not even real. I know he's not your dad. I know that, but somehow, you have his blood, and I don't. So I'm asking you, give me my dad.

Episode Title: Tainted Obligation

"Tainted Obligation" is the title of a song by REM.