Legendary radio personality Bob Fass revolutionized the FM airwaves in the '60s and '70s with his freeform NYC broadcast "Radio Unnameable." This documentary profiles Fass' long-running, late-night program filled with culture, politics and music. Amid the extraordinary archive of audio recordings are interviews with Allen Ginsberg and Abbie Hoffman, as well as performances by Bob Dylan, Arlo Guthrie and Carly Simon. A vivid time capsule of American free speech. 90 minutes Unrated.