Is YouTube the most powerful medium?

Nice overview of the online video phenomenon on CNET (if you ignore the ridiculous comparison of the YouTube founders with Woodward and Bernstein) picking up on the latest example of a video making news by capturing a New York policeman brutalizing a bicyclist for no apparent reason. It puts online video into context, links to a number of notable ones from the past, and does a nice job of summing up one of the more significant changes in journalism today, one that truly belongs to "citizen journalists."