First Lady Michelle Obama appeared on the "Late Show with Jim Fallon" Friday night. She performed a bunch of different "mom-dance" moves with the comedian, who was dressed in drag, to promote her "Let's Move" campaign.   It turns out Mrs. Obama isn't a bad dancer. She's up on pop-culture, too. She ended the dance session with the Dougie (the same move that solidified Kate Upton as an Internet superstar).  Watch the video below:   Please follow Politics on Twitter and Facebook.Join the conversation about this story »