Good Morning, Vietnam is a 1987 American war comedy-drama film written by Mitch Markowitz and directed by Barry Levinson. Set in Saigon in 1965, during the Vietnam War, the film stars Robin Williams as a radio DJ on Armed Forces Radio Service, who proves hugely popular with the troops, but infuriates his superiors with what they call his "irreverent tendency". The story is loosely based on the experiences of AFRS radio DJ Adrian Cronauer.[3]

Most of Williams' performances that portrayed Cronauer's radio broadcasts were improvisations. The film was released by Buena Vista Pictures (under its Touchstone Pictures banner) to critical and commercial success; for his work in the film, Williams won a Golden Globe Award for Best Actor – Motion Picture Musical or Comedy and was nominated for an Academy Award for Best Actor and a BAFTA Award for Best Actor in a Leading Role. The film is number 100 on the list of the "American Film Institute's 100 Funniest American Movies".