Obama surprises YouTube music twins as they listen to his new playlist

If a surprise guest is going to crash your YouTube video, you'd be hard-pressed to find someone better than former President Barack Obama.  Fred and Tim Williams, the YouTube sensation known as TwinsthenewTrend, who react to classic music, got just that treat. The 22-year-olds were reacting and discussing the Bob Dylan track "The Times They Are A-Changin" — which Obama included on his recent playlist tied to his book release — when Obama himself showed up.  "Hey people, what's going on?" Obama said. "I hear you guys were asking questions. I decided I'm just gonna go ahead and come here live." Read more... More about Obama, Culture, and Web Culture