2008-03-20: Dean Kamen
2008-03-19: Dee Dee Myers
2008-03-18: Carole King
2008-03-17: Samantha Power
2008-03-13: Hussein Ibish, Sudhir Venkatesh
2008-03-12: Howard Kurtz
2008-03-11: Geraldo Rivera
2008-03-10: George McGovern
2008-03-06: John Legend
2008-03-05: Robert Reich, Gregory Rodriguez
2008-02-28: Richard Brookhiser, Ingrid Newkirk
2008-02-27: Tony Snow
2008-02-26: Henry Louis Gates Jr.
2008-02-14: John Feinstein, Leonard Nimoy
2008-02-11: Aubrey de Grey, Philip Zimbardo
2008-02-07: Mark Moffett
2008-02-06: Richard Brookhiser, Tad Devine
2008-02-05: Angelo Falcon, Bob Dole
2008-02-04: Tony Campolo, Jacob Weisberg
