I would like to note something in this video.
There has been a recent increased use of body language experts in stories in the public domain. O'Reilly uses a body language expert (Click "Body Language" in the menu in the center left part of his page). CBS just ran a story on the body language of Hillary's speech in Denver.
So, rewatch the video above and pay attention at 1:45. Watch Obama's rate of blinking his eyes.
I'm no expert, but I wouldn't be surprised if a body language expert says that this indicates discomfort, if not disingenuity.
h/t Allahpundit over at Hot Air.