Mark Zuckerberg goes from a Harvard dorm room coding projects to ringing the bell at the NASDAQ trading floor, and this Bloomberg Television "Game Changers" profile traces how he got there. Interviews include David Kirkpatrick, who spent two years researching his book "The Facebook Effect," describing Zuckerberg's upbringing in Dobbs Ferry, New York, as the only son in a close, supportive family. The film runs through his early computing history: learning C++ as a kid, building a digital version of Risk by ninth grade, and rigging up "Zucknet," a home instant-messaging system so his family's computers could talk to each other. It follows him from Exeter, where he built the music site Synapse with Adam D'Angelo, into the Facebook years, when the company grew past 900 million users while Zuckerberg fought lawsuits over the site's origins and criticism over user privacy. The film also weighs his public image against "The Social Network," the Oscar-winning film that painted him as brilliant but socially crippled, and asks whether that portrait holds up.