Jeremy England's lecture at Karolinska Institutet: A New Theory of Evolutionary Adaptation.
Sal Khan on the CPIWhy inflation during the housing bubble was really much higher than most people thought, with possible sinister implications.
Bill Moyers Howard Zinn LectureBill Moyers gives a lecture at BU about the Plutocracy.
Khan AcademyAll the Sal Khan videos.
MIT Open CoursewareLots of high-content lectures.