DVD REVIEW Still Bill [Late Night and Weekends] Music lovers owe filmmakers Damani Baker and Alex Vlack a debt of gratitude for their tenacity. Bill Withers has remained intensely protective of his privacy since he quit the music business 25 years ago, and the directors spent years convincing him to cooperate in the making of this priceless documentary. They somehow managed to not just film hundreds of hours of footage of Withers over two years, but...