On October 27, 2009 Bill Cosby was presented with the 12th annual Mark Twain Prize for American Humor. He was awarded the Presidential Medal of Freedom in 2002 for his constitutions to television and won the Bob Hope Humanitarian Award in 2003.
NBC, 1965 to 1968
NBC, 1969 to 1971
On NBC, 1984 to 1992
Aired on CBS (1972-1984) and syndication (1984-1985).