EXPLORE All The Shades of Grey

Meredith (voiceover): Before we were doctors, we were med students, which meant we spend a lot of time of studying chemistry. Organic chemistry, biochemistry, we learned it all. But when you're talking about human chemistry only one thing matters: either you've got it or you don't.

Derek: Oh, I'm late. Dropped off the Chief's dry cleaning.

Mark: You're doing his laundry?

Derek: We're helping each other out.

Mark: Yeah, what's he doing?

Derek: He has an extensive DVD collection [pauses, raises his eyebrows, and exhales].

Mark: [Pauses] You're dating the Chief. Huh.

George: Hey.

Meredith: You look weird.

George: I don't look weird.

Meredith: What's wrong?

George: I look fine.

Meredith: I know you.

George: It's horrible. The sex. With Izzie...[whispers] horrible. It's like she's trying to hard i-its...you ever seen a porno? Not that Izzie's a porno; she's an angel, but it's like she's trying to...channel a porn star and she's trying to act all dirty and sexy, which sounds great, right? But in reality I just wanna say, "Izzie, just because you can do that with your legs doesn't mean that you should."

Meredith: [Winces and sticks her finger in her ear] Eh...I wanna run.

George: Run, run. Run now!

Izzie: [To Meredith] [Sighs] I love George.

Meredith: Oh, God...

Izzie: I do, I love him, and I'm so happy because he's kind and smart and um, sweet and sexy. He's perfect, perfect, except for the fact that he kisses like a chicken. You know a chicken pecking the ground for food, just pecking and pecking and pecking, and when he's pecking at me like that I forget that I love him, I forget that he's kind and sweet and sexy and I just wanna scream, "Stop pecking me!" Did he peck you like a chicken, Mer?

Christina: I am painting Burke's apartment so I can stop calling it Burke's apartment. A happy color. Red. Like blood.

Lexie: I'm not stalking you. I just... I hate apples. Hate them. Think they shouldn't be allowed to be a fruit. That's one. And... and two, I can draw really, really well on an etch a sketch. Like, really well, like I could be a professional if, you know, that profession existed. I play the trombone... badly. Uh, I like Math. And I notice that you do this thing with your hands when you're trying to make a point, like... like... like this. And I know that that's about you, but I ... I do it, too. So it's also about me. And that's five. Five things that I'm hoping will make it a little bit harder for you to hate me.

Meredith (voiceover): Chemistry. Either you've got it or you don't.