President Obama arrived in Boulder today, primarily to deliver a speech at the University of Colorado in support of extending the halving of student loan interest rates, currently due to expire July 1st. But before repairing to the Coors Events Center to deliver that speech, he made a quick visit to The Sink (locally famous because Robert Redford worked there while attending CU). The President made the rounds of those inside and then stepped outside to discover that a crowd had gathered around the restaurant. In that crowd was one of the team members from Orbotix, who had with him a Sphero robotic ball, which he demonstrated. He then turned the controller (iPhone?) over to President Obama, who tried it out for himself.