Richard Feynman is regarded by many as one of the greatest physicists of the 20th Century for his work on, among other things, quantum electrodynamics and superfluidity. On top of these Nobel-winning achievements he is one of the most imitated physics teachers of all time, and now you too can sit in on his classes.
HTML versions of the lectures mean you can zoom diagrams in and out and text is easy to read on your smart phone. The “high quality up-to-date copy of Feynman's legendary lectures," is a collaboration of The Feynman Lectures Website and Caltech, where Feynman gave these lectures in the first place.
For those studying physics at university this is a great resource, but even if you just want to learn about the world around you Volume 1 will help you understand the way objects move along with a guide included on how radiation and heat work. Volume 2 introduces electromagnetism and light, while Volume three explains (as much as anyone can) quantum mechanics. After studying the last section you will have no excuse for falling for all the pseudoscience dressed up as credible with a few quantum references.
So what are you waiting for? Go and watch!