Cultural references

In the episode "Pilot", Bryce, a rogue spy and an old college roommate of the main character, steals classified government secrets from a supercomputer, which is actually an original Mac Plus, which also appears in season two, episode eight in the corner of Chuck's bedroom. The communicator gadget Bryce uses in the scene is an OQO Palmtop Computer, visually almost identical to the communication device in Doom 3 (an element that appears as a useful utility throughout the storyline). The chase scene in which Bryce Larkin escapes after stealing the secrets is a reference to the opening chase scene in a French film titled Banlieue 13 or District B13 — the acrobatics that Larkin uses is a stunt form known as parkour.

In the episode "Chuck vs. the Helicopter", Chuck is viewing a series of photos when one triggers his recall of the secrets. He begins revealing apparently-unconnected secrets including "Oceanic Flight 815 was shot down by a surface-to-air..." — this invokes the exact same flight number that crashed on the ABC series Lost, though the stated cause for the flight's crash there is different.

The episode "Chuck vs. The Sandworm" is especially rife with references to other shows and films and to geek culture: the scene where Chuck runs in dramatic fashion to the Halloween party parodies the end scene of The O.C. episode, "The Countdown," including using the same soundtrack, slow-motion effects and similar placement of the characters (The O.C. and Chuck were both created by Josh Schwartz). The episode also has several references to Dune with the poster being shown in several key shots in the episode, while Morgan and Chuck's annual Halloween costume is the sandworm from Dune (and noted as such in the episode's dialog). Additionally, while being briefed on the weapons-design resource in this episode, Adam Baldwin makes reference to his Firefly character with the phrase "What, is he going to hurt me with his mind?"

Canadian cultural icons make frequent appearances. The episode "Chuck vs. Tom Sawyer" featured the Toronto-based prog-rock band RUSH's song Tom Sawyer. "Chuck vs. The Ex" has a villain named 'Guy LaFleur' - the same name as one of Canada's best and favorite hockey players.

Also, the recent character Emmett Millbarge gives a nod to the movie Spies Like Us, starring Dan Aykroyd and Chevy Chase, who play the characters Austin Millbarge and Emmett Fitz-Hume, respectively.

Morgan also carries around a bag marked "Tyrell Corporation" which alludes to the company that manufactured the replicants in the film "Blade Runner".

In the final scene of "Chuck vs. the Nemesis", when Bryce Larkin comes out of the home theater room in his tux to begin his new assignment he has a distinct "lightning-shaped" scar in the same position on his forehead as Harry Potter.

In the episode "Chuck vs. the Fat Lady" Jill is describing how her boss' password was a random word from a Vogon poem. This is a reference to one of the puzzles in the Hitchhiker's Guide to the Galaxy interactive fiction game that was produced by Infocom.