Olympic beach volleyball player Kerri Walsh says of this year's Summer Games: "We're feeling really good; we can't wait for London. We want to do what's never been done before, which is three consecutive gold medals." Harry How/Getty Images hide caption

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U.S. Olympic Equestrian rider Phillip Dutton jumps with Zeizos in West Grove, Pa., in this 2010 photo. Dozens of horses will fly from America to England for the 2012 Summer Olympics. Don Emmert/AFP/Getty Images hide caption

itoggle caption Don Emmert/AFP/Getty Images