I know this is an odd topic. The Feynman Lectures seem to be universally acknowledged as a great way to learn and grasp some of the simplest and most difficult concepts in physics. I am almost done the first volume and I really am enjoying the lectures. The odd thing is, I can't put my finger on why they are so good. I am already familiar with most of the topics in the first volume and yet I enjoy the lectures on even topics that I know very well. The best way I can describe it, is that the lectures have a refreshing perspective. What are some of the reasons you think the Feynman Lectures are loved by so many. ("Loved" isn't the best word, but it will do).