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Usain Bolt

Usain Bolt of Jamaica celebrates after crossing the finish line to win the gold medal in the Men's 100m Final on Day 9 of the London 2012 Olympic Games at Olympic Stadium on August 5, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

A look back at the London Olympics

Yahoo Sports

A look at some of the most memorable photos from the London 2012 Olympics. -- By Carla Thorpe, Yahoo! Sports