Rating: 9.68 million

This episode reveals how punctual Sheldon really is.

This episode reveals that every Saturday since Leonard and Sheldon have been living in the apartment, Sheldon have awakened at 6:15, poured a bowl of cereal, added a quarter cup of milk, sat on (this) end of the couch, turned on BBC America and watched Doctor Who.

The title ("The Dumpling Paradox") refers to Raj, Leonard and Sheldon arguing about who should get the extra dumpling Wolowitz usually eats (but he's not with the guys to the Chinese restaurant this time).

(The guys are testing Howard's new voice-phone.)
Leonard: Call M'kflono M'kflooniloo.
Voice-Over: Calling Rajesh Koothrappali.

Leonard: So, if you don't like this Christy, why are you letting her stay?
Penny: Well, she was engaged to my cousin while she was sleeping with my brother, so she's kinda family.

(The guys don't have enough to play HALO.)
Penny: Hey, if you guys need a fourth, I'll play.
Leonard: Great idea!
Sheldon: Uh, no... The wheel was a great idea. Relativity was a great idea. This is a "notion", and a rather sucky one at that.

Leonard: What's wrong?
Penny: Well, Howard and Christy are kind of... hooking up in my bedroom.
Leonard: Are you sure?
Penny: Look, I grew up on a farm, ok? From what I heard, they're either having sex or Howard's caught in a milking machine.

Sheldon: Well then it's all settled. Christy will stay with Howard, Penny can go back to her apartment, and I'll watch the last 24 minutes of "Doctor Who", although at this point, it's more like "Doctor Why Bother".

Rajesh: Can you please make a decision? Not only are there children starving in India, there's an Indian starving right here.

When Leonard in the beginning of the episode suggests cutting Raj in half to be able to play teams on Halo, Raj replies to Leonard, despite Penny being in the room.

Sheldon: ...can we get on with "Halo" night?

Halo is a franchise of sci-fi video games created by Bungie and owned/published by Microsoft Game Studios. The franchise most center on the Master Chief, a cybernetically-enhanced human super-soldier who, with the help of Cortana (an artificial intelligence companion), aids future humanity by defeating the Covenant. Halo is praised as being among the very best of all first-person shooting games, and the first release was "Halo: Combat Evolved" in 2001.

Sheldon: (...) turned on BBC America...

BBC America is an American television network that is both available on cable and satellite. It is currently owned and operated by BBC Worldwide and was launched on March 29, 1998. The headquarters are in New York City.

Sheldon: ...and watched Doctor Who.

Doctor Who is a British sci-fi television show produced by BBC. The show's main focus is the adventures of a mysterious alien time-traveller known as "the Doctor" who travels through space and time with his companions whilst facing a variety of foes and wrong turns.

Howard: If you'll excuse me, I have some Bar Mitzvah bonds to cash.

A "Bar Mitzvah" (male version) and a "Bat Mitzvah" (female version) are traditional Judaism "coming-of-age" ceremonies. This ceremony usually takes place when the child has turned 13, but for girls in the Orthodox movement, 12. The Bar Mitzvah is actually just like any other Sabbath service, though a lot of people think it's the time when the child goes from childhood to adulthood.

Penny: Friends do not get their friends' Care Bears all sweaty.

Care Bears are a set of characters created by American Greetings in 1981, with the use of Care Bears mostly for greeting cards. Each of the bears come in a different color and with a different insignia that represents its duty and personality. This insignia is called their "tummy symbol", because it's placed on their tummy (stomach) and it is a symbol.

Penny spends the night on Leonard's and Sheldon's couch. In the morning, Sheldon makes some cereal and wants to sit down to watch TV. He fusses over not being able to sit in "his spot" on the couch (due to Penny still sleeping there). This is something he specified in the pilot episode.