When Jill asks Chuck when they should meet at Buy More he gives her a "geek code" so Casey won't be able to follow them. Chuck tells Jill to take the latent heat of aquatic fusion (in calories/gram) and then to subtract the atomic number of the element thulium. The latent heat of aquatic fusion (the heat required to turn ice to water) is approximately 80 calories/gram. The atomic number of thulium is 81. 80 - 81 = 1. Chuck and Jill went on their date while the sun was up so Chuck probably intended for Jill to meet him at 1 o'clock in the afternoon, right after lunch!
When Chuck looks at Morgan's locker at the Buy More, there is a sticker on it from the San Diego Comic Con. Ironically, if Morgan had gone to it he may have seen the cast of Chuck there talking about their second season.
While Chuck is talking to Morgan at the Buy More, the Looney Tunes short "What's Opera, Doc?" is playing on all of the TV screens in the background. It stars Bugs Bunny & Elmer Fudd in a parody of opera (especially the works of Wagner) and is one of the most known shorts. This is especially fitting as part of the episode is related to opera.
"Libiamo Ne' Lieti Calici (La Traviata)" by Giuseppe Verdi (The team enters the opera)
"Buildings & Mountains" by The Republic Tigers (Chuck and Jill go on a road trip)
"Keep Yourself Warm" by Frightened Rabbit (Closing scenes)
The note that Casey sang to open the music box and expose the hidden opera glasses was not a high C; he actually sang an E.
Jill: So is this a normal day at the office for you?
Sarah: Yes, except Casey doesn't usually sing.
Jill: You have five minutes to convince me that what I saw was not what I saw.
Chuck: Yeah - that might be a little tough because I can't get into the specifics without you having to know top secret government - [okay] We broke into Guy's room and we found this box. But when we opened it it sprayed stuff all over Sarah and me. So, what you saw when you saw the two of us in our underpants what you really saw were two people trying to wash off what we thought was poison but it really turned out to be powdered fruit punch. See? There, simple. Do you believe me?
Jill: What kind of fruit punch?
Lester: Morgan! You got to break Morgan. Chuck tells him everything.
Jeff: His beard holds so many secrets.
Chuck: (after Casey sings a high note) Hey! What?
Casey: Choir boy. What? I wasn't hatched.
Chuck: (Handing Casey the copy of the encoded Fulcrum list) Q36 game copier. Thankfully, Morgan is too cheap and unethical to pay for his own video game entertainment. Canada's greatest gift since Shania Twain.
Sarah: You are not concerned to involve a civilian in a covert government investigation?
Casey: No, girl's pushing Guy Lafleur's view is of use to us. You sure you're not just jealous because Bartowski's found himself a new piece of asset?
Chuck: Wait. So not only did we not get the Fulcrum list, but Jill's never gonna speak to me again, because she caught me naked, rinsing off fruit punch with another woman?
Casey: Common spy problem.
Chuck: What is it? What is it, flesh-eating bacteria or anthrax? Am I gonna die?
Casey: Nope. But you can add ice and give it to little kids to sell on street corners.
Chuck: I knew it. Drugs.
Casey: It's powdered fruit punch, dumb ass.
Morgan: (to Chuck) Of course I can cover for you, man, because we're best friends, and that's what best friends do. They lie for each other, but they don't lie to each other.
Sarah: Jill, if it looks like a bomb and it ticks like a bomb, generally it is a bomb.
International Episode Titles:
Czech Republic - Chuck a tlustá paní (Chuck and the Fat Lady)
Original International Air Dates:
Turkey: March 9, 2009 on CNBC-e
United Kingdom: July 21, 2009 on Virgin 1
Latin America: July 26, 2009 on Warner Channel
Australia: August 13, 2009 on FOX8
Czech Republic: February 8, 2010 on Prima COOL
Slovakia: May 23, 2010 on Markiza
Finland: July 1, 2011 on Sub
Although credited, Ryan McPartlin (Devon "Captain Awesome" Christian Woodcomb), Mark Christopher Lawrence (Michael "Big Mike" Tucker), Julia Ling (Anna Melinda Wu) and Sarah Lancaster (Eleanor "Ellie" Bartowski) do not appear in this episode. However, Anna can be seen in the photographs that Emmett uses to blackmail Morgan.
This episode was previously known as "Chuck Versus the T-Rex".
In the opera house, when Chuck and Jill solve the puzzle, the clock stops at 0007. Somewhat of a tribute to James Bond in Goldfinger, the bomb gets shut off at 007.
Chuck: The Culper Ring used to use stuff like that to pass along information during the Revolutionary War days.
The Culper Ring was a spy ring organized by Benjamin Tallmadge under the orders of General George Washington in the summer of 1778. The Ring's task was to infiltrate British-controlled New York City and report troop dispositions and intentions. The Ring conducted covert operations until the end of the American Revolutionary War, though its heyday was between 1778 and 1781. A modern day Culper Ring has also been depicted in the comic book "Y The Last Man".
When Jill makes a reference to her old boss loving puzzles she tells Chuck he once left a clue in an "obscure bit of Vogon poetry." The Vogons are a fictional alien race in The Hitchhiker's Guide to the Galaxy series by Douglas Adams. They are known for their awful poetry.