George Foreman, dead at 76 last Friday in Houston, boxed at the apex of the sport in the 1970s, when the heavyweight champions — Joe Frazier, Foreman, Muhammad Ali — were among the most famous men on the planet. He returned to boxing in the 1990s, when the sport had declined dramatically in quality and public following. When he became champion again in 1994 — at age 45! — he was bigger than boxing, beloved by all.