Behind the Mask The Unauthorized DVD is a 2002 unauthorized documentary film about the American heavy metal band Slipknot. This one sided disc charts the creation and rise of the band. It has neither subtitles nor closed captions on the release. The documentary looks at the bands early days, their rise to fame, and what they mean to their fans. Due to licensing restrictions, the film features no music or performances by Slipknot.
Source: Wikipedia