I couldn't find it on youtube, but I distinctly remember an uncomfortable exchange in the news coverage between Obama and a Journalist on the campaign trail in '08. The question was asked while he was walking to his SUV and he spun around in furry. It was one of those eerie moments when someone's face suddenly changes to that of another person. Then it was gone in an instant. It wasn't like he just got ahold of his temper; it was more like putting a mask right back on. I've seen it before on a personal level, and let's just say its been from Cluster B / sociopathy type people. Never felt quite comfortable with him after watching that exchange on tv.