10. Sly StoneStone’s place on this list was secured before the news came last week that he’d co-operated with a Vanity Fair reporter for a lengthy profile running in next month’s issue. But one interview can’t erase nearly 30 years of seclusion, prompted by drug abuse and legal troubles. Even when Sly & The Family Stone were just past their peak in the mid-’70s, Stone was an elusive dude, often missing appointments and showing up hours late to concerts. In periodic public appearances since a 1987 coke bust—including a 2006 performance at the Grammys—Stone has looked foggy and out of touch, with all traces of his ebullient musical communalism practically eradicated. According to rumor, he’s been working on a new album over the past couple of years—and submitting his vocals by phone.