Episode 21: Kate Courtney — World Champion

Already America's mountain biking sweetheart, Kate Courtney took the world of mountain biking by storm by taking the title at this year's World Championships. Just 22 years old and with a penchant for waffles and inspiring the next generation of cyclists -- while clearly kicking butt herself -- Kate is a bright, shining, smiling force to be reckoned with for a long time to come.