2007-04-19: Sean Penn
2007-04-18: Paulina Porizkova
2007-04-17: Elaine Pagels
2007-04-16: Sen. John Kerry
2007-04-12: Dr. Richard Land
2007-04-11: Vali Nasr
2007-04-10: Jeannette Walls
2007-03-29: Clive James
2007-03-28: Jabari Asim
2007-03-27: Madeleine Albright, James Fallows
2007-03-26: John Perry Barlow
2007-03-22: Katie Couric
2007-03-21: Benjamin Barber
2007-03-20: Willie Nelson
2007-03-19: Jerome Groopman
2007-03-15: Ayaan Hirsi Ali
2007-03-14: Ed Viesturs
2007-03-13: Michael Eric Dyson
2007-03-12: Nicholas Kristof
2007-03-08: Ted Koppel
2007-03-07: Michael Specter
2007-03-06: Mark Frauenfelder
