Here is a link to the lecture series including links to videos.
Here are the slides for the lectures:
Lecture 1: Origins and Mission of the Federal Reserve
Lecture 2: The Federal Reserve after World War II
Lecture 3: The Federal Reserve’s Response to the Financial Crisis
Lecture 4: The Aftermath of the Crisis
Ben Bernanke's four-part lecture series was about the Federal Reserve and the financial crisis that emerged in 2007. The series began with a lecture on the origins and missions of central banks, followed by a lecture that discussed the role and actions of the Federal Reserve in the period after World War II. In the final two lectures, the Chairman reviewed some of the causes of, and policy responses to, the recent financial crisis, focusing specifically on the actions of the Federal Reserve.
The lectures are being offered as part of an undergraduate course at the George Washington University School of Business.
Live video of each lecture is available to the public at: http://www.ustream.tv/federalreserve.