Best Online Documentaries:
FedFlix: Incliceds movies of the United States Government free to use. Search by categories. A joint project of the National Technical Information Service and Public.Resource.Org.
Folkstreams : short films and mini-documentaries on American roots culture, including music, folkart and traditional customs.
BigThink: video interviews from the world’s most influential experts in business, entertainment, education, religion and media.
Fora.TV: videos from live events, lectures, and debates taking place at the world’s top universities, think tanks and conferences.
Internet Archive: Moving Images: thousands of digital movies which range from classic full-length films to daily alternative news broadcasts, to videos of every genre uploaded by Archive users. Many of these movies are available for download.
Academic Materials (lectures, courses)
Academic Earth: full video courses from leading universities.
iTunes U: access through iTunes Store for free academic lectures and other content.