Elegant Universe : Videos from PBS :

http://www.pbs.org/wgbh/nova/elegant/program.html

Some of my fav sites :
This American Life : http://thislife.org/

Boston's NPR : http://wbur.org

Motley Fool Radio Show :
http://www.npr.org/programs/fool/

Book Recommendation :

Einstein's Dreams - by MIT's Alan Lightman
http://web.mit.edu/humanistic/www/faculty/lightman.html