The Gong Show Movie

The Gong Show Movie is a 1980 film that shows a fictional week in the life of Chuck Barris as the host and creator of The Gong Show, through a series of outrageous competitors, stressful situations, a nervous breakdown (which compels him to run away and hide in the desert) and other comic hijinks in his life and work on the TV show. Among the highlights included a group of men dressed as a Roman Catholic priest and three nuns lip-synching Tom Lehrer's song "The Vatican Rag", the uncensored version of Jaye P. Morgan's infamous breast-baring incident and a man blowing out a candle with flatulence.—Wikipedia