Zachary Levi stars as a computer service technician who accidentally downloads a top-secret government database, the Intersect, into his brain, turning him into an unwitting spy.

The television series that perfectly matches this description is "Chuck." The show centers on Chuck Bartowski, portrayed by Zachary Levi, a seemingly ordinary computer service technician working for the "Nerd Herd" at the Buy More electronics store. His life takes an extraordinary turn when he receives an email from his former college roommate, Bryce Larkin, who is a rogue CIA agent. Opening this email causes a vast, top-secret government database, known as the Intersect, to be downloaded directly into Chuck's brain.

This accidental download transforms Chuck into an unwitting, yet crucial, government asset. The Intersect grants him involuntary "flashes" of information, from combat skills to intricate spy data, whenever he encounters specific triggers like faces, objects, or keywords. To protect this living database and utilize his unique abilities, the CIA dispatches Agent Sarah Walker and the NSA sends Major John Casey to act as his handlers. This setup forces Chuck to juggle his mundane life among his friends (Review) and family with the perilous world of espionage, creating a unique blend of action, comedy, and drama.

"Chuck" aired on NBC from 2007 to 2012, running for five seasons. The series was created by Josh Schwartz and Chris Fedak, who aimed to combine elements of spy thrillers with workplace comedy. The show became beloved for its charming lead, engaging supporting cast, and its ability to balance high-stakes spy missions with the everyday struggles and relationships of its characters, often satirizing big-box electronics stores through its fictional Buy More setting.