What is the world coming to? Sheldon is taking acting lessons from Penny, Raj has a crush on Bernadette and Leonard ponders SyFy.
Sheldon: You're the most important electron in a Hydrogen atom.
Leonard: How do you get an entire lecture hall to flip you off at the same time.
Penny: Listening to Dr. Cooper has made me want to start cutting myself again.
Sheldon: I may have changed a few lives today.
Sheldon: Oh, Tweets about my lecture.
Sheldon: I'm not familiar with the acronym KMN.
Sheldon: I didn't want to teach those poopy heads anyway!
Howard: That is what Darth Vader said right before he started building the Death Star.
Raj: It's like accidently walking into a gay bar and nobody hitting on you.
Raj: I want to be something with sex appeal like a Labradoodle.
Sheldon: Since my ill attempt to complete a chin up in March of 1989.
Amy Farrah Fowler: Maybe you should take acting lessons.
Penny: You want an acting lesson?
Sheldon: "I suck the big one."
Howard: Bernadette has needs. Sexual needs.
Raj: I'm definitely not gay.
Sheldon: And Henry Winkler's AAAAAAAAAA! I'm an actor.
Penny: Nobody calls action.
Sheldon: I'd like a frozen yogurt please.
Sheldon: I see a sign that says Camarillo State Mental Hospital.
Leonard: SyFy, That's Sifie.
Howard: Listen to me, I'm not going to make it.
Raj: I guess I have no choice to make sweet, guilty love to you for the rest of your life.
Sheldon: So is the McRib sandwich, I don't care for that either.
Penny: Where no Sheldon has gone before?
Sheldon: Mr. Spock, the role I will bring to life.
Penny: I am Spock.
Sheldon: I just don't buy it.
Sheldon: I just love that line, even the way you do it.
Sheldon: Don't let Spock take me to the future.\
Raj: Dance number aside, I'm so not gay.