In a performance that Joel Siegel of ABC News called "a transformation," Will Smith plays boxing legend Muhammad Ali in a visually stunning epic from Academy Award-nominated director Michael Mann (The Insider). Beginning with Ali's ground-breaking boxing victories in the 1960s and 1970s, Ali explores the physical and psychological battles experienced by the athlete who would come to be known as "The Greatest." Facing a tumultuous romantic life, deeply held religious beliefs, and the pressures of ever-increasing fame, Muhammad Ali's quick-witted personality and strong friendships helped him "float like a butterfly and sting like a bee." In addition to Smith's acclaimed performance, Ali features a revealing portrait of the boxer's close friend, sportscaster Howard Cosell, played by Oscar nominee Jon Voight.