He ran with teenage gangs in Brooklyn before becoming a global rock star in the Summer of Love. He was managed by the mob, hung with Hendrix, trashed thousands of hotel rooms, unwittingly paid for an unknown Led Zeppelin to support him on tour, taught John Bonham (as well as Fred Astaire) a thing or two about drumming, and took part in Zeppelin's infamous deflowering of a groupie with a mud shark. After enrolling in Rod Stewart's Sex Police, he hung...