The Thespian Catalyst


 * (Penny calls Mrs. Cooper)
 * Penny: Hi, Mrs. Cooper. It's Penny. Yeah, I think I broke your son. Okay, hold on. (hands the phone to Sheldon) Talk to your mother.
 * Sheldon: Mommy, I love you, don't let Spock take me to the future.


 * (The ending scene at Caltech cafeteria where the infuriated Bernadette enters Raj's table looking very cross)
 * Bernadette: (she shouts at Raj crossly) Okay, Raj, I know you’ve been avoiding me and Howard, and I’m not leaving until you tell me what’s going on inside that little head of yours.


 * Raj: Dance number aside, I am so not gay.


 * Sheldon: Now, in this pivotal scene, Sheldon's mother, played by you, argues with an emissary of the United Federation of Planets, Mr. Spock, the role I will bring to life.
 * Penny: Okay, that's fine, but let's try and get you out of the comfort zone.
 * Sheldon: Why would we want to do that? It's called the comfort zone for a reason.
 * Penny: Okay, the whole point of this is to loosen you up a little, so I'm thinking you'll play the role of your mother, and I will bring the life to Mr. Spock.
 * Sheldon: I'm sorry, you'll be Spock?
 * Penny: It's only logical.


 * Sheldon: Oh, tweets about my lecture. Hmm. That's rather unfair. That's downright cruel. Plus, insects has six legs. Yeah, I'm not familiar with the acronym KMN.
 * Leonard: Oh, uh, from the context, we think it means 'kill me now'.
 * Sheldon: Well, I suppose everyone's entitled to their own opinion. I think I'll turn in. (walks into the bedroom hall then turns around) I didn't want to teach those poopy heads, anyway! (Goes into his room)
 * Howard: FYI, I think that's what Darth Vader said just before he started building the Death Star.


 * Penny: Hi. Welcome to Pasadena Shoes. I'm Penny. How may I help you.
 * Sheldon: I'll have a frozen yogurt.
 * Penny: Well luckily, we also sell yogurt too. Read the sign.
 * Sheldon: Oh yes, it says Camarillo State Mental Hospital. That is the only explanation why you would be selling shoes and frozen yogurt.