Accelerating Progress in Obesity Prevention is the basis of The Weight of the Nation, a multipronged project, which will shed new light on the facts and myths of this urgent public health issue and explore how obesity is impacting our nation and the health care system. This project will feature a series of four documentary films, a three-part HBO Family series, 14 bonus short films, a social media campaign, a companion book, and a nationwide community-based outreach campaign. The four-part documentary series and other facets of the initiative were developed with expert input from the Institute of Medicine as well as the Centers for Disease Control and Prevention and the National Institutes of Health.