Bill Withers seems like an unlikely subject for a movie, right? Even if you’re a soul music fan, hell-even if you were a Bill Withers fan up until the point that “Still Bill” was made, his life seemed like it was one of the least likely for even a documentary. An unassuming, regular-Joe singer/songwriter, Withers amassed a string of hits over the course of a decade before abruptly retiring to concentrate on family life. No drugs, no paralyzing car accidents, […]