For years, Lance Armstrong was accused of doping, but again and again, the cycling star denied the use of any drugs. Things took a turn, though, when new evidence came out in late 2012 and Armstrong stepped down from his charity, Livestrong. In January 2013, he sat down for a shocking interview with Oprah where he confessed to years of doping and the lies that followed. He got emotional when Oprah brought up his kids, saying, "I saw my son defending me and saying, 'That's not true. What you're saying about my dad is not true.' That's when I knew I had to tell him."