Kristin Scott Thomas, Don Guter
No overview available.
Stephen J. Cannell, Janis Kearney
No overview available.
Sen. Roland Burris, M.I.A.
No overview available.
Mickey Rourke
No overview available.
Danny Boyle
No overview available.
Dr. Martin Indyk, Viola Davis
No overview available.
Garry Shandling
No overview available.
Sean Penn
No overview available.
Danny Glover, Q-Tip
No overview available.
Ashford & Simpson
No overview available.
Suze Orman
No overview available.
Melissa Leo, Carlos Moore
No overview available.
Greg Mortenson, Sen. Robert Menendez
No overview available.
Graham Nash
No overview available.
Neil deGrasse Tyson, David Denby
No overview available.
Former President Jimmy Carter
No overview available.
Lamont Dozier, Raphael Saadiq
No overview available.
Dr. Palitha Kohona, Ravi Nessman
No overview available.
2009 Oscar nominees
No overview available.
Joan Baez
No overview available.
T.C. Boyle
No overview available.
Esperanza Spalding, Adam Cohen
No overview available.
Bill Maher
No overview available.
Bryan Cranston, Becky Quick
No overview available.
Jeffrey Sachs, T.C. Boyle
No overview available.
Neko Case, Rep. Marsha Blackburn
No overview available.
Ian McShane, Thomas Ricks
No overview available.
Robert Gates
No overview available.
Gov. Jennifer Granholm, Noah Wyle
No overview available.
Felicity Huffman, Tony Dungy
No overview available.
Dan Baum, Bill Paxton
No overview available.
EPA Administrator Lisa Jackson, Bobby Womack
No overview available.
Timothy Hutton, Thomas P.M. Barnett
No overview available.
Tricia Rose, Zoe Heller
No overview available.
Christopher Guest, Harry Shearer, Michael McKean
No overview available.
Simon Baker, Newt Gingrich
No overview available.
Dr. Keith Black, The-Dream
No overview available.
A tribute to John Hope Franklin
No overview available.
Carla Harris, Bobby Cannavale
No overview available.
Judith Jamison, Israel Houghton
No overview available.
Judith Jamison
No overview available.
Emmanuel Jal, Sen. Kent Conrad
No overview available.
Jaime Pressly, William Cohan
No overview available.
A tribute to Marvin Gaye
No overview available.
Carlos Santana
No overview available.
Israel Houghton, Seth Davis
No overview available.
Kevin Spacey
No overview available.
1 guest star
Liberian President Ellen Johnson-Sirleaf
No overview available.
Ray Liotta, Gary Locke
No overview available.
James Ingram, Nandan Nilekani
No overview available.
Mark Robert Waldman
No overview available.
Rep. Henry Waxman, Idris Elba
No overview available.
Abraham Verghese, Labelle
No overview available.
Anna Paquin, Robert Greenwald
No overview available.
Dara Torres, India.Arie
No overview available.
Sgt. Juan Luis Alcivar
No overview available.
Rep. Barney Frank, Hugh Masekela
No overview available.
Wangari Maathai
No overview available.
Leslie Gelb, David Brenner
No overview available.
Sgt. Juan Luis Alcivar, Anika Noni Rose
No overview available.
Tracey Ullman
No overview available.
Prince
No overview available.
Bria Valente, Prince
No overview available.
Kristin Chenoweth, Roger Wilkins
No overview available.
Joshua Cooper Ramo, Mike Krzyzewski
No overview available.
Mary Higgins Clark
No overview available.
Thomas Cahill, Ziggy Marley
No overview available.
Sam Haskell, Donald Faison
No overview available.
Darryl Strawberry
No overview available.
Dr. Walter Earl Fluker, Patti Davis
No overview available.
J.J. Abrams
No overview available.
Joe Queenan, Dr. William Baker
No overview available.
Mayor Antonio Villaraigosa, Baron Davis, Stacy Peralta
No overview available.
Steve Earle, John Harwood
No overview available.
Maxwell, Michael Fauntroy
No overview available.
Steve Zahn, Brendan Gleeson
No overview available.
Earth, Wind & Fire, Richard Haass
No overview available.
Steve Martin
No overview available.
Reza Aslan, Common
No overview available.
Ed Asner
No overview available.
Bill Russell
No overview available.
Mandy Moore, Cesar Perales
No overview available.
Norman Lear
No overview available.
Edie Falco, Paul Ingrassia
No overview available.
Vernon Jordan
No overview available.
Nia Vardalos, Azadeh Moaveni
No overview available.
Kevin Bacon, Dave Bing
No overview available.
Nanci Griffith, Mary Frances Berry
No overview available.
Joe Scarborough, Sharon Jones
No overview available.
2 guest stars
Larry King
No overview available.
Colson Whitehead, Della Reese
No overview available.
Karen Bass, Mary McCormack
No overview available.
Jerry Leiber, Mike Stoller, Marina Nemat
No overview available.
Chris Noth, Ali Sethi
No overview available.
1 guest star
Roseanne Barr
No overview available.
Luma Mufleh, Rick Steves
No overview available.
Trita Parsi, Hilda Solis
No overview available.
Francis Ford Coppola
No overview available.
Francis Ford Coppola, Femi Kuti
No overview available.
Mary Mary
No overview available.
Katty Kay, Paul Giamatti
No overview available.
A tribute to Michael Jackson, Berry Gordy
No overview available.
Michael Eric Dyson, Dr. Cornel West
No overview available.
Shohreh Aghdashloo, Roger Cohen
No overview available.
Bill Pullman, Debo Adegbile
No overview available.
Jane Mayer, Malina Saval
No overview available.
Jeremy Renner, David Ignatius
No overview available.
Berry Gordy, the Homemade Jamz Blues Band
No overview available.
Lisa Kudrow, Mayor James Young
No overview available.
Peter Peterson, Dr. Michael Roizen
No overview available.
Dr. Olufunmilayo Olopade, Jessica Queller, Diahann Carroll
No overview available.
Jay Leno
No overview available.
Mark Johnson, Jay Leno
No overview available.
Corneille, Rep. Baron Hill
No overview available.
Biz Stone, Gloria Reuben
No overview available.
Davis Guggenheim, David Faber
No overview available.
Dylan McDermott, Warren Moon
No overview available.
Smokey Robinson
No overview available.
Howard Dean, a tribute to Don Hewitt
No overview available.
Arne Duncan, Benjamin Barber
No overview available.
Alexis Bledel, Stan Brock
No overview available.
Quentin Tarantino
No overview available.
Reba McEntire, Dean Koontz
No overview available.
Rep. John Lewis, Vernon Jordan
No overview available.
Ron Williams, Eric Sundquist
No overview available.
Josh Charles, Douglas Brinkley
No overview available.
Doug Pray, Robert Baer
No overview available.
Alex S. Jones, Mekhi Phifer
No overview available.
Ledisi, Peter Baker
No overview available.
George Foreman, Fred Kaplan
No overview available.
Terence Blanchard
No overview available.
Smokey Robinson
No overview available.
Ken Burns
No overview available.
Ted Kennedy Jr.
No overview available.
R. Dwayne Betts
No overview available.
Jenna Elfman, Matthew Weiner
No overview available.
Herb Alpert, Lani Hall
No overview available.
David Duchovny, Rep. Mike Pence
No overview available.
Dr. Yvonne Sanders-Butler, Michael Strahan, Daryl Mitchell
No overview available.
Ken Burns
No overview available.
Michael Moore
No overview available.
Tom Ridge, Adam Arkin
No overview available.
Rodrigo y Gabriela, James Brown
No overview available.
Max Blumenthal, Michael C. Hall
No overview available.
Rev. Jesse Jackson Sr., George Benson
No overview available.
Dr. Cornel West
No overview available.
Karen Armstrong, Nick Hornby
No overview available.
Michael Sheen, Aaron S. Williams
No overview available.
James Ellroy, Sen. Bill Nelson
No overview available.
Pete Escovedo, Sheila E.
No overview available.
Dr. Terrence Roberts, Joshua Bell
No overview available.
Amb. Michael Oren, Michael Chabon
No overview available.
Michelle Monaghan, Vali Nasr
No overview available.
Rep. Ron Paul, Bob Herbert
No overview available.
Anthony Edwards, The RZA
No overview available.
Andy Williams
No overview available.
Malcolm Gladwell, Robin D.G. Kelley
No overview available.
Haleh Esfandiari, Nicholas Kristof
No overview available.
Dr. Ruth Simmons
No overview available.
Marcus Roberts, Edward Norton
No overview available.
Kris Kristofferson
No overview available.
Nomi Prins, the Swell Season
No overview available.
Lee Eisenberg, Susie Essman
No overview available.
Mitch Albom, Chiwetel Ejiofor
No overview available.
Andrew Ross Sorkin, Lang Lang
No overview available.
Max Cleland, Amerie
No overview available.
Bruce Feiler
No overview available.
Lance Reddick, Jason Zweig
No overview available.
Dan Senor, Gail Collins
No overview available.
Harry Connick Jr.
No overview available.
Paul Mooney
No overview available.
Andre Agassi
No overview available.
50 Cent
No overview available.
Dave Matthews
No overview available.
Viggo Mortensen
No overview available.
Ali Eteraz, Angie Stone
No overview available.
Amy Goodman, Jason Schwartzman
No overview available.
Malcolm Gladwell, Robin D.G. Kelley
No overview available.
Dr. Ruth Simmons
No overview available.
Ann Louise Bardach, Rev. Jesse Jackson Sr.
No overview available.
Yo-Yo Ma
No overview available.
Gov. David Paterson, Fred Willard
No overview available.
Morgan Freeman
No overview available.
Maggie Gyllenhaal, Jeff Bridges, Sen. Bernie Sanders
No overview available.
Boyz II Men, Ann Louise Bardach
No overview available.
Gov. Ed Rendell, Shirley Caesar
No overview available.
James Cameron
No overview available.
Kenneth Wade, James Bradley
No overview available.
Mary J. Blige
No overview available.
Youth Leadership Panel with Eduardo Campos, Kate Sim, Cortlan Wickliff, Kimberly Anyadike, Galen Dodd & Rocio Ortega
No overview available.
Alan Alda, Tobey Maguire
No overview available.
Sandra Bullock
No overview available.
Joe Torre
No overview available.
Rosanne Cash
No overview available.
Bob Newhart, Dan Balz
No overview available.
Nicole Lee, Jim Wallis
No overview available.
Jason Reitman, Walter Isaacson
No overview available.
Marion Cotillard, Robert Lacey
No overview available.
Keri Russell, Paul Ingrassia
No overview available.