Guests: Fmr Lt. Gov. Michael Steele, fmr Hewlett-Packard CEO Carly Fiorina, TV host Craig Ferguson; via satellite, fmr Sen. John Edwards (D-NC) and basketball player John Amaechi

Guests: Rep. Darrell Issa, author Ayaan Hirsi Ali, actor Steven Weber; via satellite, Sen. Joe Biden and filmmaker David Mamet

Guests: Author/commentator John Ridley, MSNBC's Joe Scarborough, Rep. Barney Frank; via satellite, journalist Seymour Hersh and actress Mia Farrow

Guests: Author David Kuo, Washington Post reporter Dana Milbank, comedienne Roseanne Barr, author Deepak Chopra; via satellite, Maj. Gen. Paul Eaton (ret.)

Guests: Actor Jason Alexander, Martha Raddatz of ABC News, journalist Dan Rather; via satellite, comedian Chris Rock and fmr Gov. Mike Huckabee

Guests: Fmr Bush speechwriter David Frum, Atlanta mayor Shirley Franklin, musician John Legend; via satellite, fmr Natl Security Advisor Zbigniew Brzezinski and Sen. Bernie Sanders

Guests: Radio host Michael Smerconish, comedian D. L. Hughley, Court TV's Catherine Crier; via satellite, Fmr Sec'y of State Madeleine Albright and Rep. Ron Paul

Guests: Fmr Sen Bill Bradley, comedian Dana Carvey, Fmr White House Press Sec'y Scott McClellan; via satellite, Rev. Al Sharpton, activist Laurie David, musician Sheryl Crow

Guests: Author John O'Sullivan, commentator Amy Holmes, Gov. Brian Schweitzer (Mont.); via satellite, journalist Bill Moyers

Guests: Actor Richard Belzer, NPR correspondent Jamie Tarabay, commentator Lisa Schiffren, Rep. Dennis Kucinich, fmr US Attorney David Iglesias

Guests: Fmr Rep Harold Ford, Jr., actor/activist Sean Penn, comedian Garry Shandling; via satellite, fmr Gov Tommy Thompson and CNN's Dr. Sanjay Gupta

Guests: Columnist Arianna Huffington, comic Paula Poundstone, pollster Frank Luntz; via satellite, NBC News correspondent Richard Engel and columnist Christopher Hitchens

Guests: Actor Bradley Whitford, Rep Loretta Sanchez (Calif.), columnist John Fund, hip-hop mogul Russell Simmons; via satellite, Sen Christopher Dodd (Conn.)

Guests: Humorist P. J. O'Rourke, actor Ben Affleck, Rep Ron Paul (Texas); via satellite, filmmaker Michael Moore

Guests: Actor Tim Robbins, journalist Michel Martin, writer Stephen Hayes; via satellite, Fmr Gov Mike Huckabee (Ark.) and New York Times correspondent Damien Cave

Guests: Fmr Sen Mike Gravel (Alaska), diplomat Barbara Bodine, musician John Mellencamp; via satellite, entertainer Harry Shearer and PETA president Ingrid Newkirk

Guests: Prof Cornel West, rapper/actor Mos Def; via satellite, Army Col Larry Wilkerson (ret.) and consumer advocate Ralph Nader

Guests: Journalist Carl Bernstein, Rep Jan Schakowsky (Ill.), comedian Drew Carey; via satellite, Sen Chuck Hagel (Neb.) and author Robert Draper

Guests: Musician Rob Thomas, comedian/actress Janeane Garofalo, author Salman Rushdie; via satellite, fmr CIA agent Michael Scheuer and author Bjørn Lomborg

Guests: Rep Rahm Emanuel (Ill.), Prof Michael Eric Dyson, writer Pete Hamill; via satellite, filmmaker Ken Burns and CNBC's Maria Bartiromo

Guests: Columnist Paul Krugman, MSNBC host Tucker Carlson, The View co-host Joy Behar; via satellite, fmr Pres Vicente Fox (Mexico) and author/activist Naomi Klein

Guests: Fmr Sen John Edwards (N.C.), journalist Joel Stein, Rep Sheila Jackson-Lee (Texas), MSNBC host Chris Matthews; via satellite, chess master Garry Kasparov

Guests: Commentator Andrew Sullivan, tennis pro Martina Navratilova, Gen Wesley Clark (ret.); via satellite, Sen Kay Bailey Hutchison (Texas) and author Sir David Frost

Guests: Fmr CIA operative Valerie Plame and her husband, fmr Amb Joe Wilson; political blogger Markos Moulitsas; NPR host Alison Stewart (radio); actor/comedian Martin Short ; via satellite, author Jeremy Scahill