Raj: Okay, maybe we should just end this.
Howard: Wait, hang on. I just want to point out to everyone here, this is a man who is going to great lengths to better himself. Even at the risk of being humiliated. And I, for one, think that's very brave.
Raj: Thank you, Howard.
Emily: Honestly, I'm surprised you two didn't wind up together.
Howard: Well, like you gals, I had to suffer through him to find Bernadette.

Howard: You know, I'm really glad you decided to learn Mandarin.
Sheldon: Why?
Howard: Once you're fluent, you'll have a billion more people to annoy instead of me.

Howard: I invented a game. Want to play?
Leonard: Sure.
Howard: It's called Emily or Cinnamon. I give you actual quotes I've heard Raj say, and you guess if he was talking to his girlfriend or his dog.

Bernadette: Does your mother call you every day at work to see if you had a healthy lunch?
Howard: My mother calls me every day at work to see if I had a healthy bowel movement.

Leonard: He really worked with the Drug Enforcement Agency?
Penny: He didn't know it 'til he was cuffed, but yeah.

Amy: Well, everybody has things that they need help with. Like me. I can't see without my glasses. And right now you're just a cute, pink smudge wearing a childish green smudge.

Bernadette: You know, I just read that a team at MIT developed a device that helps people read human emotions.
Leonard: And you think we can get those guys to reprogram Sheldon? Cool.