Documentarian Leon Gast spent two months in Zaire and 22 years in editing rooms in order to create and complete "When We Were Kings", his 1996 documentary on the Muhammad Ali-George Foreman 'Rumble in the Jungle' heavyweight title bout and its profound affect on the African-American community. Originally intended to be a concert film, it evolved into a portrait of the youthful and popular Ali contrasted with the more subdued Foreman. Because of a postponement due to an injury to Foreman, the scheduled concert, headlined by James Brown and B B King, went on to nearly empty houses. Yet Gast kept