Here are my favorite online courses, conferences, etc. The podcasts on Low Dimension Electron Systems are exciting with much information on graphene, graphane, etc. Sidney's lectures now have sort of a cult status. In many the blackboard is too bury to read, but Harvard affiliates can get the DVDs which are clearer. The wireless mike he uses sometimes picks up intelligible radio chatter. Sidney's videos are not in color. This adds to the feeling of a bygone age. It is wonderful how Standford University, MIT, etc. have the lectures from a number of their courses on YouTube.
Sidney’s Lectures on Quantum Field Theory:
Segre Lecture in Physics - Mildred Dresselhaus
3.091 Introduction to Solid State Chemistry
University of Cambridge - Lectures on Superconductivity
2008 Nobel Laureate Meeting in Lindau
Berkeley Center For Cosmological Physics