Amy states that the last time Sheldon was in the zone, he tried to figure out how electrones travel through graphine. Yet, when that happened during season 3, Amy wasn't introduced yet. The others could have told her about that, though.
Sheldon: How do I make them stop loving me?
Leonard: Invite them to live with us.
Leonard: No, it's okay. It was really thoughtful.
Penny: No, it's not... I mean... What's thoughtful is everything you do. Here, you know what? Look at this. Look here's the...the plane ticket you bought me when I was too poor to go home for the holidays. And the rose you left on my windshield...just because. And the...the thank-you letter you me after the first time I slept with you. All eleven pages of it.
Leonard: Can't believe you saved all this stuff.
Penny: Of course I did. It's you.
Leonard: Come here.
Leonard: Is that a pregnancy test?
Penny: Oh yeah, just the first one. I didn't save them all.
Leonard: Besides I do romantic things for you all the time. Can you name me one romantic thing you've done for me?
Penny: I can name tons.
Leonard: Sex doesn't count.
Sheldon: I've got to find a way to stop this thing.
Leonard: Buddy, I don't think you can. I mean you know, once it's out there, it's out there. This thing's like the science equivalent of a sex tape.
Sheldon: Frankly, I would prefer a sex tape.
Leonard: You don't know what a sex tape is, do you?
Raj: As I'm sure as you are aware the quickest way through a man's heart is through his...
Penny: Pants. But Leonard said that sex doesn't count.
Raj: Oh. You pure little thing. You have one arrow in your quiver and you just can't use it.
Howard: Next week is the anniversary of my first date with Bernadette.
Sheldon: Really don't care.
Howard: I want to do something special and I was hoping that you guys could be a part of it.
Penny: Oh, what horrible thing are you trying to make up for.
Howard: Putting something in the bank for what horrible thing I do next.
Sheldon: I can't believe I read this table wrong. I blame you.
Amy: Me, what did I do?
Sheldon: You distract me. I've been distracted since the moment I met you.
Amy: I'm sorry.
Sheldon: Well you should be. Because all I can think about is how much I want to kiss you. And not just on the cheek, but on the mouth. Like mommies and daddies do.
Amy: Oh, Sheldon.
Sheldon: [Sheldon leans toward her, then Amy wakes up.]Amy. Amy! Did you hear what I said?
Amy: Can't talk. In the zone.
Leonard: Hey, I get that you feel bad about all the attention, but still what you did is amazing. We're really proud of you.
Amy: I'm not.
Sheldon: You're not?
Amy: Sheldon, I've been thinking about it and you're right. You don't deserve any credit. All you did was misread some numbers on a table. A very easy table, too. Honestly, I'm embarrassed for you.
Sheldon: That's the most romantic thing I've ever heard.
Sheldon: This is the very copy of the Handbook of Chemistry and Physics in which I looked up the reaction rates of mendelevium and...
Amy: And what?
Sheldon: No. No, no, no, no.
Amy: What's wrong?
Sheldon: I've made a horrible mistake.
Amy: What are you talking about?
Sheldon: This table. It's in square centimeters. I read it in square meters. Do you know what that means?
Amy: That Americans can't handle the metric system?
Sheldon: Amy, I was off by a factor of ten thousand.
Amy: But the Chinese team found the element.
Sheldon: Well they shouldn't have, my calculations were wrong. There must be some resonance between the elements I didn't know about.
Amy: Well, you just got lucky?
Sheldon: Sheldon Cooper does not get lucky!
Amy: You and me both, brother. It doesn't matter. The element was found because of you and that's ground breaking.
Sheldon: What matters is the greatest scientific achievement of my life is based on a blunder. I'm not a genius. I'm a fraud.
Amy: So you just got lucky?
Sheldon: Sheldon Cooper does not get lucky.
Amy: You and me both, brother.
The song Howard sings to Bernadette was written by a duo called Garfunkel and Oates, which consists of Kate Micucci (who played Raj's girlfriend Lucy) and Riki Lindhome (who played Sheldon's grad school groupie Ramona Nowitzki).
Original International Airdates:
Finland: January 28, 2014 on Sub
This episode's end titles have Chuck Lorre's Vanity Card #427.
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