• James Caan
  • August 7, 2006
  • March 9, 2006
• Dr. Helen Caldicott
  • October 9, 2006
• Joseph Califano
  • August 9, 2007
  • June 27, 2006
• Neve Campbell
  • September 7, 2004
• Bebe Moore Campbell
  • August 2, 2005
• Tony Campolo
  • March 10, 2008
• Geoffrey Canada
  • September 16, 2004
• Dr. Christopher Cannon
  • January 24, 2005
• Nick Cannon
  • April 9, 2007
  • July 25, 2005
• Drew Carey
  • January 28, 2008
  • March 14, 2005
• George Carlin
  • June 23, 2008
  • April 8, 2004
• Jay Carney
  • September 5, 2008
  • January 17, 2007
• Johnnie Carr
  • December 1, 2005
• Diahann Carroll
  • October 17, 2008
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• Andrew Carroll
  • May 30, 2005
• Dr. Ben Carson
  • August 25, 2005
• Dr. Clayborne Carson
  • January 15, 2007
  • January 16, 2006
• President Jimmy Carter
  • September 8, 2008
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• Majora Carter
  • May 8, 2008
• Neko Case
  • June 21, 2006
• Damien Cave
  • March 20, 2008
• Dick Cavett
  • May 25, 2006
• Cedric the Entertainer
  • June 13, 2005
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  • February 23, 2004
• Hugo Chàvez
  • September 22, 2006
• Michael Chabon
  • May 11, 2007
• Sen. Lincoln Chafee
  • October 26, 2004
• Wendy Chamberlin
  • November 7, 2007
• Patrick Chamusso
  • October 26, 2006
• Rajiv Chandrasekaran
  • November 8, 2006
• Lan Samantha Chang
  • April 18, 2005
• Tracy Chapman
  • September 14, 2005
• Chevy Chase
  • January 19, 2007
• Jean Chatzky
  • November 26, 2004
• Ricardo Antonio Chavira
  • April 21, 2006
• Don Cheadle
  • June 28, 2007
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• Joey Cheek
  • August 19, 2008
• Christine Chen
  • April 19, 2006
• Kristin Chenoweth
  • May 1, 2006
• Andrew Cherng
  • November 14, 2006
• Michael Chertoff
  • June 12, 2007
• Cyrus Chestnut
  • March 29, 2007
• Lionel Chetwynd
  • October 19, 2004
• Michael Chiklis
  • April 20, 2007
  • March 3, 2005
• John Cho
  • April 25, 2008
• Dr. Deepak Chopra
  • October 12, 2007
  • January 21, 2004
• Yvon Chouinard
  • December 13, 2005
• Erika Christensen
  • March 23, 2005
• Yvette Christiansë
  • February 15, 2007
• Ron Christie
  • February 21, 2006
• Warren Christopher
  • December 12, 2006
• Chuck D
  • August 15, 2007
  • December 12, 2006
  • February 10, 2004
• Santino Majok Chuor
  • November 5, 2004
• Thomas Haden Church
  • April 8, 2008
  • June 22, 2006
• Forrest Church
  • October 25, 2007
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• Chris Cillizza
  • August 18, 2008
• Gen. Wesley Clark
  • March 24, 2008
  • October 29, 2007
  • January 8, 2004
• Richard Clarke
  • June 5, 2008
  • September 11, 2006
  • December 9, 2005
• Jason Clarke
  • July 20, 2006
• Thurston Clarke
  • August 5, 2008
• Patricia Clarkson
  • October 19, 2005
• Janet Clayton
  • March 25, 2004
• Troy CLE
  • September 7, 2007
• President William J. Clinton
  • July 26, 2004
  • June 28, 2004
• George Clinton
  • August 29, 2005
• Sen. Hillary Clinton
  • February 18, 2008
  • February 1, 2008
• Glenn Close
  • May 21, 2004
• Dr. Henry Cloud
  • March 29, 2006
• Dr. Price Cobbs
  • October 27, 2005
• Joe Cocker
  • August 6, 2008
  • August 6, 2006
• William Cohen
  • March 1, 2007
  • December 4, 2006
  • January 12, 2006
• Ben Cohen
  • July 21, 2006
• Janet Langhart Cohen
  • March 1, 2007
• Natalie Cole
  • December 4, 2006
• Sen. Norm Coleman
  • February 7, 2007
  • March 15, 2005
• Steve Coll
  • April 18, 2008
• Toni Collette
  • February 22, 2007
  • July 17, 2006
• Stephen Collins
  • May 10, 2007
  • March 16, 2005
• Sen. Susan Collins
  • March 18, 2005
• Sean "P. Diddy" Combs
  • September 3, 2004
• Common
  • March 14, 2007
  • January 17, 2007
  • February 6, 2006
• Joe Conason
  • October 5, 2005
  • June 21, 2004
• Michael Connelly
  • May 20, 2005
• Maria Contreras-Sweet
  • August 30, 2007
• Tim Conway
  • July 25, 2007
• Kerry Max Cook
  • March 8, 2007
• Cook, Dixon & Young
  • June 16, 2006
• LL Cool J
  • August 20, 2008
  • April 11, 2006
• Cynthia Cooper
  • April 15, 2008
• Helene Cooper
  • September 24, 2008
• Sen. Jon Corzine
  • April 12, 2004
• Gov. Jon Corzine
  • September 29, 2008
• Bill Cosby
  • January 5, 2004
• Bill Cosby
  • May 26, 2004
• Nikka Costa
  • May 27, 2005
• Bob Costas
  • October 18, 2005
• Elvis Costello
  • June 20, 2006
• Dorothy Cotton
  • April 3, 2008
  • January 15, 2007
• Ann Coulter
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• Robert Cray
  • November 9, 2006
• Kimberlé Williams Crenshaw
  • April 7, 2008
  • November 2, 2004
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• Michael Critelli
  • August 25, 2005
• James Cromwell
  • October 20, 2006
• David Crosby
  • February 19, 2008
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• Stanley Crouch
  • June 29, 2006
  • October 15, 2004
• Tom Cruise
  • August 23, 2004
• Penélope Cruz
  • February 9, 2007
• Jon Cryer
  • June 20, 2005
  • June 7, 2004
• Mark Cuban
  • June 18, 2004
• Ice Cube
  • March 26, 2007
  • February 21, 2006
  • April 20, 2005
• Harry "Bud" Cummins
  • April 18, 2007
• Mario Cuomo
  • April 5, 2004
• Marshall Curry
  • January 12, 2006
• Christopher Paul Curtis
  • January 11, 2005
• Jamie Lee Curtis
  • September 18, 2006
• John Cusack
  • December 3, 2007
• R.J. Cutler
  • February 21, 2006
• Carlos & Salvador Santana
  • January 11, 2008
• Charlize Theron, Martin Henderson
  • September 24, 2008
• Chick Corea, Bela Fleck
  • May 25, 2007