Barnett R. Rubin

11 September, 2007

David M. Walker

9 October, 2007

James Hansen

22 October, 2007

Jonathan Lear

1 Novermber, 2007

Orville Schell

28 November, 2007

David Blight

25 January, 2008

David Brion Davis

CANCELLED

Winona LaDuke

25 February, 2008

Daniel Jonah Goldhagen

17 March, 2008

Rita Colwell

14 April, 2008

John Guare

25 April, 2008

Bob Kerrey

30 April, 2008