 The character is self-centered, smarmy, quick-tempered, and overbearingly insincere.During the course of the film, Swan beds a supposed girlfriend, encounters a female fan with a peculiar physical "gift", and barricades himself in owing to a severe emotional breakdown due to his agent's dropping him and his girlfriend's leaving him, all within the confines of QSKY's studio.Also rounding out the cast are Cleavon Little, who plays the Prince of Darkness, QSKY's overnight host (Little had previously played a disc jockey in the film "Vanishing Point" (1971)); Eileen Brennan as "Mother", the 40-something nighttime DJ; Alex Karras as "Doc Holiday", the midday DJ with the lowest ratings on the station who is eventually dismissed from the station; Cassie Yates as Laura Coe, who takes over Doc's midday slot; and Tom Tarpey as new sales manager Regis Lamar, the bane of the disk jockeys' existence.