Florence Griffith-Joyner

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 da