2013-04-01: Sigourney Weaver
2013-03-28: Dr. Robert Lustig
2013-03-27: Carl Edgar Blake II
2013-03-26: Dr. Eric Topol
2013-03-25: Junot Diaz
2013-03-07: John Sexton
2013-03-06: Brendan O'Connell
2013-03-05: James Franco
2013-03-04: Kirk Bloodsworth
2013-02-28: Obama speechwriter Jon Favreau
2013-02-27: Paola Antonelli
2013-02-26: Dr. Michio Kaku
2013-02-25: Simon Garfield
2013-02-21: Lil Buck
2013-02-20: David Goldhill
2013-02-19: Emily Bazelon
2013-02-14: Gavin Newsom
2013-02-13: Dave Grohl
2013-02-12: Roger Hodge
2013-02-11: Garry Wills
2013-02-07: Behn Zeitlin
2013-02-06: Lawrence Wright
2013-02-05: Julie Andrews
