I used to listen to the Harvard/Norton lectures in high school at our local library (33 1/3). In grade school, we watched his Young People's Concerts in music class (16mm film). If you haven't read a biography of LB, he had an amazing and entertaining life.
For anyone who is really interested in his Harvard lectures, and wants to dig deeper:
There is a book called "A Generative Theory of Tonal Music" that uses these lectures as it's philosophical starting point.
The authors go to pretty far lengths to connect back to this lecture series and refer to them often in their examples.