US swimmers Michael Phelps kisses his mother Debbie after the medal ceremony for the men's 4 x 200m freestyle relay swimming final at the National Aquatics Center during the 2008 Beijing Olympic Games in Beijing on August 13, 2008. A US team led by superstar Michael Phelps broke the men's 4x200m freestyle relay world record with a time of 6min 58.56sec. The victory gave Phelps his fifth gold medal of the Beijing Games and the 11th Olympic gold of his career. [Agencies]