In 1958, journalist Neil Leifer took the picture that remains one of his most famous to this day. The day he got the shot--Alan Ameche's game-winning "sudden death" touchdown--was Leifer's 16th birthday. This game, called "the greatest ever played," signaled football's emergence as America's new national pastime; formerly half-empty stadiums welcomed sold-out crowds seemingly overnight, while football surpassed baseball in national television ratings...