Just ran across an interesting set of streaming lectures by various people today, including James Randi:
http://www.princeton.edu/WebMedia/lectures/
Don't know if they have been mentioned before. It was looking for physics stuff today that led me to Roger Penrose's lectures there.
http://www.princeton.edu/WebMedia/lectures/
Don't know if they have been mentioned before. It was looking for physics stuff today that led me to Roger Penrose's lectures there.