The 100 Years of Olympic Glory director died in New York on Christmas Day (25Dec10), aged 84.
In his landmark 1996 documentary about the Olympic Games, Greenspan interviewed hundreds of athletes who had taken part in the sporting event throughout the 1900s.
Greenspan began his career as a sports broadcaster in New York and his love of all things Olympic Games began in 1952 when he covered the event in Helsinki, Finland.
In his first major film, Jesse Owens Returns To Berlin, Greenspan chronicled the American sprinter's return to the scene of his medal-winning triumphs at Adolf Hitler's 1936 Olympics in the early 1960s.
Greenspan served as the official documentarian of seven summer and winter Olympics. He won seven Emmy Awards.