As Chuck is a comedy series with strong ties to both geek and tech-culture, and also part of the "spy" genre, some emphasis is placed on technology within the show. Technologies in the show usually drive the plot (most notably the Intersect), but some gadgets are directly for comic effect (tennis ball grenades). Some of the devices in the series are accompanied by a nod to pop-culture, such as the GLG-20 listening device. There are multiple references made to James Bond in particular.
During Chuck's first season, the Buy More was used as the main base of operations by the team, although by Season 2 it was largely replaced by Castle. Located in a strip mall near the "Large Mart" (a parody of wholesale retail stores like Costco and Sam's Club), much of the store is a typical "big box" style electronics retailer. However, the government made numerous modifications to some areas of the store to facilitate the team's operations throughout the course of the series. By the end of the first season Fulcrum began to identify the store as a place of interest, and sent an agent to infiltrate and monitor the store. Fulcrum has on several occasions attempted to determine what the government's interest in the store is, and by "Chuck Versus the Predator", they identified it as a CIA substation.
The store is a parody of electronics retailers such as Best Buy, and plays a large role in the branding of the series. In addition to its use as the team's base in the first season, most side-plots in each episode in some way involve the store and its employees. The store was managed by "Big" Mike Tucker from "Chuck Versus the Intersect" up through "Chuck Versus the First Kill", when Emmett Millbarge manipulated Morgan into getting Big Mike demoted. Big Mike returned to his former position during the third season. When the secondary plots of an episode intertwine with the main plot, the Buy More is generally involved.
In "Chuck Versus the Ring: Part II", the Buy More is destroyed by explosives planted by Daniel Shaw, which were accidentally activated when Morgan dropped the detonator. This fiasco was blamed on Jeff and Lester as an arson crime, as Jeff suggested to Big Mike that burning down the store was the best way to keep their jobs.