Forum Network: PBS, NPR, and others have created The Forum Network, an online repository of audio and video lectures, largely recorded and filmed by local public radio and television stations (particularly WGBH). These lectures cover a wide variety of topics and usually feature well-known authorities, including Nobel Prize Laureates, professors, innovators, authors, practitioners, etc. Click “Lectures” in the top left and then selecting a subject area to browse. The lectures range from just under one hour to two hours maximum in most cases.
Academic Earth: Academic Earth's Mission: Academic Earth is an organization founded with the goal of extending high quality academic opportunities to people around the globe. Free Video Lectures from leading universities.
VideoLectures: "open-access educational repository of high-quality, mainly scientific video lectures. At present nearly 300 events, more than 5,300 authors, 6,000-plus lectures, and 8,300-plus videos are available. The site, which won a 2009 World Summit Award." (Choice Review, Jan. 2010)
Learner's TV: "This is a comprehensive site providing thousands of downloadable Video lectures, Live Online Tests,etc in the fields of Biology, Physics, Chemistry, Mathematics, Computer Science, Engineering, Medicine, Management and Accounting, Dentistry, Nursing, Psychology, History, Language Training, Literature, Law, Economics, Philosophy etc FREE to its visitors... This site provides free video and audio lectures of whole courses conducted by faculty from reputed universities around the world. Science Animations provide students with fun and innovative ways of learning. Free live timed online tests with instant feedback and explanations will help you refine your test taking skills. Most of the materials offered are licensed by the respective institutes under a Creative Commons License." (Site description)
TED: "This website is provided as a public service to promote the spread of good ideas. It welcomes anyone willing to join us in this pursuit." (Site description). This site has various speakers on all kinds of topics. Sponsored by TED Conferences.
Academic Film Archive: "The mission of the The Academic Film Archive of North America is to acquire, perserve, document, and promote academic film by providing an archive, resource and forum for continuing scholarly advancement and public exhibition." (site description)
Education Portal Lessons: 5300+ lessons which are taught by subject matter experts. Short, bite-sized videos (5-10 minutes long). Subjects include: Science, Humanities, Spanish, Math, English, Social Science, History, and Business.