On stage, he was the master and in charge and funny and quick and in life, he wasn't on stage anymore. I just felt a little bit off, I think he was really comfortable on stage and less comfortable off  stage and in life. Told largely through Williams’ own voice, captured in interviews and audio recordings, and with a wealth of never-before-seen footage, including home movies and film/TV outtakes, the film showcases Williams’ boundless energy, lightning wit and knack for creating memorable characters on stage and screen. The documentary also features personal archival material and new interviews with those who loved and knew Williams best, including Billy Crystal, Pam Dawber, David Letterman, Steve Martin and many more.