Interested in learning from some of the world’s top scholars? Academic Earth has hundreds of video lectures from professors at Berkeley, Harvard, MIT, Princeton, Stanford, and Yale.
You can subscribe to courses through RSS or add the podcasts to your iTunes library. Users are able to grade both the lectures and the courses, viewable by other users.
Academic Earth is an organization founded with the goal of giving everyone on earth access to a world-class education, by using technology in innovative ways to increase the ease of learning. AE hopes to “bring the best content together in one place and create an environment that in which that content is remarkably easy to use.”