David Letterman revitalized television's late-night talk-show format beginning in the 1980s. His irreverent and ironic humor, sometimes abrasive celebrity interviews, and wild antics won Letterman the reputation as one of TV's most popular and innovative personalities. Born in Indiana, Letterman idolized Johnny Carson (1925–; see entry under 1960s—TV and Radio in volume 4) and dreamed of being a broadcaster from childhood. In 1975, he moved to Hollywood (see entry under 1930s—Film and Theater in volume 2) to pursue a career as a stand-up comedian and comedy writer.

NBC offered Letterman a late-night show in the 12:30 A.M. time slot. Late Night with David Letterman (1982–93) was a perfect showcase for its host's offbeat wit. Letterman continued the traditional talk-show format of a monologue (an opening series of jokes), followed by celebrity interviews. He also added an edgy sensibility to the traditional format. Audiences could expect all sorts...