Raj: Dr. Gablehouser.
Dr. Gablehouser: Dr. Koothrapali.
Leonard: Dr. Gablehouser.
Dr. Gablehouser: Dr. Hofstadter.
Sheldon: Dr. Gablehouser.
Dr. Gablehouser: Dr. Cooper.
Howard: Dr. Gablehouser.
Dr. Gablehouser: Mr. Wolowitz

Howard: Sheldon, don't take this the wrong way, but, you're insane.
Leonard: That may well be, but the fact is it wouldn't kill us to meet some new people.
Sheldon: For the record, it could kill us to meet new people. They could be murderers or the carriers of unusual pathogens. And I'm not insane, my mother had me tested.

Leonard: [to a "smiling" Sheldon] We're here to see Koothrappali, not kill Batman.

(Sheldon smiles in a grotesque way).
Howard: Oh crap that's terrifying.