Late Show with David Letterman S11E78 Jessica Simpson & Nick Lachey, Al Green

Watch Late Show with David Letterman Season 11 Episode 78 Online – Stephanie demonstrates her ex-boyfriend's lackluster dancing abilities once more; John McEnroe does the Top Ten and promotes his new talk show at the same time; Gavin MacLeod makes a guest appearance in "Potatoes or Gavin MacLeod?"; by the end of the show, Steph, Gavin, and John are dancing together.