2008-03-31: Sen. Chuck Hagel
2008-03-20: Alex Kingsbury
2008-03-19: Sen. Arlen Specter
2008-03-18: Jeffrey Sachs
2008-03-17: Brian Fagan
2008-03-13: Dana Perino
2008-03-12: Ronald Kessler
2008-03-11: Grover Norquist
2008-03-06: Sen. Tom Daschle
2008-03-05: Martin Fletcher
2008-03-04: Ralph Nader
2008-03-03: Sen. Hillary Clinton
2008-02-28: Brian Williams
2008-02-27: Allen Guelzo
2008-02-26: Madeleine Albright
2008-02-14: Lee Siegel
2008-02-13: Mark Siegel
2008-02-12: Bill Kristol
2008-02-11: Philip Shenon
2008-02-07: Laton McCartney
2008-02-06: Tom Brokaw
2008-02-05: Chris Wallace