The documentary film has become a driving force of engagement and opinion. Films like an 'Inconvenient Truth' and 'Citizen Four' are mirrors of public conscience about issues like the environment, health care, government spying, the treatment of dolphins and the economy. Talking with us about the current state of the documentary film genre is Jill Gomilow, one of the founders of independent American cinema, and a pioneer of documentary film. (Photo: Flickr/Craig Piersma)