From YouTube's Head of Culture and Trends, a rousing and illuminating behind-the-scenes exploration of internet video's massive impact on our world. Whether your favorite YouTube video is a cat on a Roomba, “Gangnam Style,” the “Bed Intruder” song, an ASAPscience explainer, Rebecca Black's “Friday,” or the “Evolution of Dance,” Kevin Allocca's Videocracy reveals how these beloved videos and famous trends--and many ...