American Studies Colloquium, Haverford College, November 15, 2002; Social Theory Seminar, New York University, December 6, 2002; Taft Lecture, University of Cincinnati, February 11, 2004; Natchez Conference, Natchez, Mississippi, February 13, 2004; Global Studies Program, University of Minnesota, March 25, 2005; Black Atlantic Series, Rutgers University, February 13, 2006.