Academic Earth
If you are a big fan of TED talks, then I would highly recommend you check out Academic Earth
They currently have lectures on a wide range of topics from the following institutions: Berkeley, Harvard, MIT, National Institute of Health, Princeton, Stanford and Yale.
Academic Earth was launched on January 18, 2009 and had one million site visits in its first three months, a great indication of where learning and the sharing of knowledge is headed.
You can follow them on Twitter, join their fan page on Facebook or subscribe to their RSS feed.


























