When Beyonce and Jay Z are performing, all eyes are glue to the stage. Unless, that is, Barack Obama is rocking out behind you. Fans were delighted to spot the former U.S. president unleashing his best dad moves with wife Michelle beside him in a private booth at the FedExField in Landover, Maryland on Saturday. Throwing their arms in the air during Jay's track N****s in Paris, the former first couple were on their feet and clearly loving every moment as their old friends lit up the stage.