Michael Phelps of the United States kisses his sister after his team winning the men's 4x100m medley relay final at the Beijing 2008 Olympic Games in the National Aquatics Center, also known as the Water Cube in Beijing, China, Aug. 17, 2008. Phelps won his eighth gold medal at the Beijing Olympics swimming events on Sunday, breaking Mark Spitz's record of seven gold medals won at a single Games in 1972. (Xinhua/Lan Hongguang)  Photo Gallery>>>

Michael Phelps of the United States hugs his mother and sister after his team winning the men's 4x100m medley relay final at the Beijing 2008 Olympic Games in the National Aquatics Center, also known as the Water Cube in Beijing, China, Aug. 17, 2008. Phelps won his eighth gold medal at Beijing Olympics with 3 minutes 29.34 seconds in the event. (Xinhua/Wang Dingchang) Photo Gallery>>>