Thank God It's Friday is a 1978 American musical-comedy film directed by Robert Klane and produced by Motown Productions and Casablanca FilmWorks for Columbia Pictures. Produced at the height of the disco craze, the film features The Commodores performing "Too Hot ta Trot", and Donna Summer performing "Last Dance", which won the Academy Award for Best Original Song in 1978. The film features an early performance by Jeff Goldblum and the first major screen appearance by Debra Winger. The film also features Terri Nunn, who later achieved fame in the 1980s new wave group Berlin. This was one of several Columbia Pictures films in which the studio's "Torch Lady" came to life in the opening credits, showing off her moves for a few seconds before the start of the film.

Disco is a genre of dance music and a subculture that emerged in the 1970s from the United States' urban nightlife scene. Its sound is typified by four-on-the-floor beats, syncopated basslines, string sections, brass and horns, electric piano, synthesizers, and electric rhythm guitars.