There have been some terrific performances already this season on America's Got Talent. We've had sensational, unexpected show-stopping moments from the likes of Andrew De Leon and the usual, quirky, but hilarious moments like the one offered up by Twiggy the Water-Skiing Squirrel. But last week, during the final audition round, we were treated to a truly Olympic moment, when Mary Joyner, the daughter of Olympic champions Florence Griffith and Al Joyner, took the stage and showed the world her gold-medal worthy talent. No, she doesn't run. She SINGS!! And she is brilliant. WATCH!