As the world prepares for the 2012 Olympic Games in London, Oprah sits down with 10 legendary Olympians, including track-and-field stars Carl Lewis, Jackie Joyner-Kersee and Al Joyner; world-renowned gymnasts Bart Conner, Nadia Comaneci, Mary Lou Retton and Shawn Johnson; diver Greg Louganis; and world-record-breaking swimmers Janet Evans and Mark Spitz. Plus a bonus conversation with Bruce Jenner! These athletes open up about their triumphs, their untold stories and what happens after the glory. Plus, Mary Joyner, the daughter of Al Joyner and the late Florence Griffith-Joyner, talks to Oprah about how her mother's death has impacted her life. Then, get an in-depth look at who to watch in 2012, including Lolo Jones, Gabby Douglas, Missy "the Missile" Franklin, Michael Phelps, Carmelita Jeter and Jordyn Wieber.