Michael Stevens, aka Vsauce, presents the question "Why Do We Play Games?" in this highly entertaining 12-minute video.
While he tends to get off on some tangents (discussing the origins of the words soccer, nerds and jocks), in the end we get a good explanation of why humans play games and sports, how it benefits us, and why life can be considered the biggest game of all.
Keith Shaw rounds up the best in geek video in his ITworld.tv blog. Follow Keith on Twitter at @shawkeith. For the latest IT news, analysis and how-tos, follow ITworld on Twitter, Facebook, and Google+.