Late Show with David Letterman S19 E107 Joel McHale, Andrew Norelli, Will.I.Am

Dave welcomes actor Joel McHale, comedian Andrew Norelli, and musical guest Will.I.Am. Top Ten Nations Competing in the Olympics or Bones in the Human Body. Biff Henderson hangs out with some of the United States' top athletes. Are Joel McHale and Chevy Chase fighting behind the scenes at "Community"?