From the blog:
Apparently, Bill Gates has purchased the rights (to many of the Feynman lectures) and posted them for free on his Microsoft Research Labs “Project Tuva”. I can’t recommend these enough, Feynman had the ability of teaching science in a simple, insightful, and eloquent manner.
Often all it taken to enliven a dull subject is a spectacular teacher, and few can doubt Feynman's charisma. What Warren Buffet is to investing, Feynman is to general physics. They serve their specialties with a hearty dose of common-sense and humor.
The only problem with these lectures is that it requires SilverLight!