It is often said that Richard Feynman was truly a magician. The Tuva project (apparently Bill Gates is its sponsor) at Microsoft Research is showing Richard Feynman’s ‘Messenger Series’ lectures. Although the format is slightly dated (check out the non-wireless microphone!), it does nothing to hide Richard Feynman’s infectious enthusiasm for science and its exposition. As Bill notes in his introduction, his motivation for making these publicly available is “…everybody ought to see these, as they make science interesting…”.
If this has whet your appetite, check out The Feynman Lectures on Physics including Feynman’s Tips on Physics: The Definitive and Extended Edition