2012 Summer Olympics Best and Worst moments: Oscar Pistorius, a double-amputee who runs on carbon-fiber blades, ran a 45.44 in his heat of the mens 400m. It was good enough for second place in the heat and to qualify him for Sundays semifinals. Unfortunately, Pistorius did not advance to the finals. But its still a remarkable story.  Pistorius, who was born without fibulas and had his legs amputated below the knee before he was a year old, has had to undergo extensive testing in his home country to prove his carbon blades arent giving him an unfair advantage over runners with regular legs. Once it was shown that that was not the case, he was put on the South African national team.  -- Andrea Reiher, Zap2it
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