Has anyone heard of this? You can find it at www.khanacademy.org. I originally heard about the website from a reference in a speech given by Bill Gates.

This man Khan started making these educational videos and eventually was so successful with it he quit his job and makes them full time. He must have over 600 videos about 15 minutes each. I have done many of the chemistry lectures and I just finished the French Revolution. Talk about gifted! This is a great resource, and free.