Extras is a British sitcom about extras working in television, film, and theatre. The series was co-produced by the BBC and HBO, and written and directed by Ricky Gervais and Stephen Merchant, both of whom starred in it. It follows the lives of Andy Millman (Gervais), his friend Maggie Jacobs and Andy's substandard agent and part-time retail employee Darren Lamb (Merchant) as Millman muddles through life as an anonymous "background performer" who eventually finds success as a B-list sitcom star.

A background actor or extra is a performer in a film, television show, stage, musical, opera, or ballet production who appears in a nonspeaking or nonsinging (silent) capacity, usually in the background. War films and epic films often employ background actors in large numbers: some films have featured hundreds or even thousands of paid background actors as cast members. Likewise, grand opera can involve many background actors appearing in spectacular productions.