khan academy
http://www.youtube.com/watch?v=j0c2vmFGbtk
Edgar the worker
http://www.youtube.com/watch?v=rQj1qlsjVoM
Milton Friedman 1
http://www.youtube.com/watch?v=ca8Z__o52sk
Milton Friedman 2
http://www.youtube.com/watch?v=Rls8H6MktrA
Milton Friedman 3
http://www.youtube.com/watch?v=XMo0taZnPN4
Milton Friedman 4
http://www.youtube.com/watch?v=x-BGi4NIFww
Schiff
http://www.youtube.com/watch?v=I_IMuxMXd3E
