There is a good documentary series at the Olympic Channel about the (graphic) design of the Olympic Games. (link)
List of episodes
- Mexico 1968
- Munich 1972
- Los Angeles 1984
- Salt Lake City 2002
- Athens 2004
- Beijing 2008
- Vancouver 2010
- London 2012
- Olympic Rings
- Olympic Games Logos
- Pictograms
- Look of the Games