Sheldon Cooper: Quantum physics makes me so happy.Leonard Hofstadter: Yeah? I'm glad.Sheldon Cooper: It's like looking at the universe naked.
Sheldon Cooper: Yes?Leonard: I'm Leonard Hofstadter. I called you about the apartment and you said to come by...Sheldon Cooper: I know what I said. I know what you said. I know what my mother said on March 5, 1992. What is the sixth noble gas?Leonard: What?Sheldon Cooper: You said you were a scientist. What is the sixth noble gas?Leonard: Radon?Sheldon Cooper: Are you asking me or telling me?Leonard: Telling you?Leonard: Telling you.Sheldon Cooper: All right. Next question. Kirk or Picard?Leonard: That's tricky... Original Series over Next Generation, but Picard over Kirk.Sheldon Cooper: Correct. You have passed the first barrier to roommatehood. You may enter.
Amy Farrah Fowler: I missed you.Sheldon Cooper: To quote Han Solo - I know.Amy Farrah Fowler: Did you miss me?Sheldon Cooper: I would have preferred to have you there with me.Amy Farrah Fowler: Awww.Sheldon Cooper: Or instead of me.