Andy Warhol was an American visual artist, film director and producer. A leading figure in the pop art movement, Warhol is considered one of the most important American artists of the second half of the 20th century. His works explore the relationship between artistic expression, advertising, and celebrity culture that flourished by the 1960s, and span a variety of media, including painting, sculpture, photography, and filmmaking. Some of his best-known works include the silkscreen paintings Campbell's Soup Cans (1962) and Marilyn Diptych (1962), the experimental film Chelsea Girls (1966), the multimedia events known as the Exploding Plastic Inevitable (1966–67), and the erotic film Blue Movie (1969) that started the "Golden Age of Porn".