It isn't actually possible to have your characters have sex in World of Warcraft, despite Wolowitz apparently having done so.
We learn that Leonard can't eat melon.
Sheldon: (referring to an over sized desk) Why do you even want this here? Its size is completely disproportionate to its purpose!
Raj: Seeing as its purpose was to piss you off, I'd say it's spot on!
Sheldon: This isn't a desk; it's a Brobdingnagian monstrosity.
Raj: Is that the American idiom for 'giant-big ass desk'?
Sheldon: Actually, it's British!
Penny: Well, I would ask you guys if you want dessert, but I know Sheldon doesn't eat dessert on Tuesdays, and even if Raj wanted something he couldn't tell me. Howard won't order anything, but he will come up with some sort of skeevy comment involving the words pie or cheesecake, and Leonard is lactose intolerant so he can't eat anything here without his intestines blowing up like a balloon animal.
Leonard: That's great news about you and Bernadette!
Howard: Yeah, I think I'm going to take her to miniature golf.
Leonard: Oh, well, I guess for you guys that's like regular golf.
Howard: Short jokes, really? You're like a quarter of an inch taller than me!
Leonard: Yeah, and don't you forget it!
Raj: Oh, you are so arrogant! If you were a super hero your name would be Captain Arrogant, and you know what your superpower would be? Arrogance!
Sheldon: You're wrong again! If my superpower was arrogance my name would be Doctor Aragonto.
Katee Sackhoff: George, let me ask you something. How did you deal with being typecast as a science fiction icon?
George Takei: It's difficult. You try and stretch as an actor—do Strindberg, O'Neill—but all they want is, "course laid in, Captain."
Sheldon: All right, you've made your point—a fine prank, very amusing. (laughs sarcastically) Now get it out.
Raj: I have three brothers and two sisters, Sheldon, I can do this all day.
Leonard: Why would you want a glow in the dark ant farm?
Sheldon: They do some of their best work at night.
This episode's end titles has Chuck Lorre's Vanity Card #300.
As of this episode, Melissa Rauch is elevated to the main cast.
International Airdates: Australia: November 17, 2010 on Channel 9; United Kingdom: November 25, 2010 on E4; Turkey: September 20, 2011 on CNBC-e; Czech Republic: November 9, 2011 on Prima COOL; Slovakia: November 24, 2011 on Markiza
Katee Sackhoff and George Takei as credited as Special Appearance By.
Sheldon refers to Raj's desk as Brobdingnagian. Brobdingnag is a fictional land inhabited by giants in the novel Gulliver's Travels by Jonathan Swift. Since the book entered into modern culture the adjective Brobdingnagian has been used to describe anything of immense size.