Where do the world's greatest artists get their creative spark? In this fascinating documentary, director Michael Apted (Coal Miner's Daughter, Gorillas in the Mist) presents an in-depth exploration of the creative process. Acclaimed geniuses, such as rock musician David Bowie, pop artist Roy Lichtenstein, clay artist Naranjo-Morse and glass artist Dale Chihuly, discuss how and why they work the way they do.