20. 'You're Gonna Miss Me'
The 13th Floor Elevators' maniacal 1966 blooze-blasting ego-strut "You're Gonna Miss Me" established the template for psychedelic rock, and singer Roky Erickson's overdriven wail was a key influence on Janis Joplin. But in '68 Erickson suffered an apparent psychotic breakdown onstage, and the following year he accepted psychiatric confinement to avoid a 10-year prison sentence after he was busted with a single joint. Drug overindulgence, involuntary electroshock, legal harassment – this could make for a lurid, exploitative film in the wrong hands, but director Keven McAlester focuses on the troubled man behind the mythos, charting how Erickson's brother Sumner helps the struggling rocker come to grips with his life.