Documentary films constitute a broad category of nonfictional motion pictures intended to document some aspect of reality, primarily for the purposes of instruction or maintaining a historical record. A 'documentary film' was originally shot on film stock — the only medium available — but now includes video and digital productions that can be either direct-to-video, made as a television program or released for screening in cinemas. "Documentary" has been described as a "filmmaking practice, a cinematic tradition, and mode of audience reception" that is continually evolving and is without clear boundaries.

In popular myth, the word 'documentary' was coined by Scottish documentarian John Grierson in his review of Robert Flaherty's film Moana (1926), published in the New York Sun on 8 February 1926, written by "The Moviegoer" (a pen name for Grierson).

Grierson's principles of documentary were that cinema's potential for observing life could be exploited in a new art form; that the "original" actor and "original" scene are better guides than their fiction counterparts to interpreting the modern world; and that materials "thus taken from the raw" can be more real than the acted article. In this regard, Grierson's definition of documentary as "creative treatment of actuality" has gained some acceptance, with this position at variance with Soviet film-maker Dziga Vertov's provocation to present "life as it is" (that is, life filmed surreptitiously) and "life caught unawares" (life provoked or surprised by the camera).

Andy Warhol (August 6, 1928 – February 22, 1987) was an American artist who was a leading figure in the visual art movement known as pop art. His works explore the relationship between artistic expression, celebrity culture and advertisement that flourished by the 1960s. After a successful career as a commercial illustrator, Warhol became a renowned and sometimes controversial artist. The Andy Warhol Museum in his native city, Pittsburgh, Pennsylvania, holds an extensive permanent collection of art and archives. It is the largest museum in the United States of America dedicated to a single artist.

Andy Warhol's artwork ranged in many forms of media that include hand drawing, painting, printmaking, photography, silk screening, sculpture, film, and music. He was a pioneer in computer-generated art using Amiga computers that were introduced in 1985, just before his death in 1987. He founded Interview Magazine and was the author of numerous books, including The Philosophy of Andy Warhol and Popism: The Warhol Sixties. Andy Warhol is also notable as a gay man who lived openly as such before the gay liberation movement. His studio, The Factory, was a famous gathering place that brought together distinguished intellectuals, drag queens, playwrights, Bohemian street people, Hollywood celebrities, and wealthy patrons. Warhol has been the subject of numerous retrospective exhibitions, books, and feature and documentary films. He coined the widely used expression "15 minutes of fame". Many of his creations are very collectible and highly valuable. The highest price ever paid for a Warhol painting is US$100 million for a 1963 canvas titled Eight Elvises. The private transaction was reported in a 2009 article in The Economist, which described Warhol as the "bellwether of the art market". Warhol's works include some of the most expensive paintings ever sold.