Oscar Pistorius of South Africa runs in the men's 200-meter event at the Paralympic World Cup in May. Some observers have suggested Pistorius receives an unfair advantage from his carbon-fiber "blade" legs. Michael Steele/Getty Images hide caption

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Will these Green Bay fans be cheering as much as they did during the 2011 Super Bowl when their beloved Packer games are interrupted by local political ads this fall? Matt Ludtke/Getty Images hide caption

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Chinese volleyball player Yunwen Ma during a game between China and Germany, at the Montreux Volley Masters women tournament, in Montreux, Switzerland, in 2011. JEAN-CHRISTOPHE BOTT/EPA /Landov hide caption

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In this handout photo provided by the USATF, Jeneba Tarmoh (bottom, lane 1) and Allyson Felix cross the finish line at exactly the same time in the women's 100 meter dash final during Day Two of the 2012 U.S. Olympic Track & Field Team Trials at Hayward Field on June 23 in Eugene, Ore. It's their torsos, not head, hands, feet or arms, that matter. USATF/Getty Images hide caption

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In this handout photo provided by the USATF, Jeneba Tarmoh (bottom, lane 1) and Allyson Felix cross the finish line at exactly the same time in the women's 100 meter dash final during Day Two of the 2012 U.S. Olympic Track & Field Team Trials at Hayward Field on Saturday in Eugene, Ore. It's their torsos, not head, hands, feet or arms, that matter. USATF/Getty Images hide caption

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Transporting reams of athletes' medical information has become a major burden for the U.S. Olympic Committee, and is one reason it's switching to electronic medical records. Andrew Villegas/KHN/iStockphoto.com hide caption

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Heptathlon athlete Jessica Ennis in March at the official British team kit launch for the London 2012 Olympic and Paralympic Games. Warren Little/Getty Images for adidas hide caption

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Many track fans watched online four years ago, as sprinter Usain Bolt set a world record at the Beijing Olympics. This year, NBC will stream video of all 302 events online. And Bolt, seen here showing his appreciation for video in 2010, will try to repeat his feat. Mark Dadswell/Getty Images hide caption

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Archer Khatuna Lorig, seen here during the London Archery Classic last October, helped actress Jennifer Lawrence prepare for her role as Katniss Everdeen in The Hunger Games. Dean Mouhtaropoulos/Getty Images hide caption

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