The Feynman Lectures on Physics are now available for free online. While I'm not familiar with them aside from having heard "Six Easy Pieces" ages ago, my understanding is that they're considered some of the best lay introductions to the subject, delivered by one of its foremost experts at the time.
I only wish they had the audio up, because the fact that one of the most brilliant minds of the 20th century talked like the movie version of a New York cab driver amuses me to no end.
http://feynmanlectures.caltech.edu/
I only wish they had the audio up, because the fact that one of the most brilliant minds of the 20th century talked like the movie version of a New York cab driver amuses me to no end.
http://feynmanlectures.caltech.edu/