An interesting bit from PBS Idea Channel on DND and Social Interactions.
[ame=http://www.youtube.com/watch?v=VFtlDhksGHA]Can Dungeons & Dragons Make You A Confident & Successful Person? | Idea Channel | PBS - YouTube[/ame]

The Idea Channel on YouTube have quite a few interesting shorts, that I'm just discovering thanks to an article on Kotaku.
Original article.
Watch This Explanation of Why Playing D & D Totally Makes You Better at Life