Watch Sadisflix. Since ancient times, the Green Man has been one of the most mysterious and menacing of mythical characters. He also has a familiar face as Robin Hood , Jack in the Green and on numerous pub signs. Across the arts from comic strips to classical opera, the Green Man is now making a comeback. Where is he taking us? Writer Sir Kingsley Amis , film director John Boorman , composer Sir Harrison Birtwistle and other leading artists offer their interpretations of the mystery in this Omnibus documentary film from 16th November, 1990.