Charles Tilly, Columbia University. December 15, 2007. (youtube) (hi-res video)
Tom Sugrue, University of Pennsylvania. January 9, 2008. (youtube)
Jerry Balmuth, Colgate University, February 29, 2008. (youtube)
Ahmad Rahman, University of Michigan-Dearborn, April 10, 2008. (youtube) (hi-res video)
Eliezer Jaffe, The Hebrew University, October 21, 2009 (youtube)
George Steinmetz, University of Michigan, December 1, 2009 (youtube) (hi-res video)
Doug McAdam, Stanford University, May 13, 2010 (youtube) (hi-res video)