Tonight Stephen welcomes CNN anchor John King.

Tonight Stephen welcomes Fortune columnist and author of The Tyranny of Dead Ideas: Letting Go of the Old Ways of Thinking to Unleash a New Prosperity, Matt Miller

Tonight Stephen welcomes actor and star of Che, Benicio Del Toro.

Tonight Stephen welcomes Wired columnist and author of Remix: Making Art and Commerce Thrive in the Hybrid Economy, Lawrence Lessig.

Tonight Stephen welcomes the executive director ACLU, Anthony Romero.

Tonight Stephen welcomes the author of The Ascent of Money: A Financial History of the World, Niall Ferguson.

Tonight Stephen welcomes the4 founder and CEO of Be the Change, Inc, Alan Khazei.

Tonight Stephen welcomes the host of Meet the Press, David Gregory.

Tonight Stephen welcomes New York Times columnist Frank Rich.

Tonight Stephen welcomes Washington Post columnist and author of The N Word: Who Can Say It, Who Shouldn't, and Why, Jabari Asim.

Tonight Stephen welcomes poet Elizabeth Alexander.

Tonight Stephen welcomes Newsweek editor and author of American Lion: Andrew Jackson in the White House, Jon Meacham.

Tonight Stephen welcomes the former president of the Southern Baptist Convention, Pastor Ed Young.

Tonight Stephen welcomes high-wire walker and subject of the documentary Man on Wire, Philippe Petit.

Tonight Stephen welcomes musician Dan Zaccagnino.

Tonight Stephen welcomes former White House Chief of Staff and author of The Power of Progress: How America's Progressives Can (Once Again) Save Our Economy, Our Climate, and Our Country, John Podesta.

Tonight Stephen welcomes musician Dan Zaccagnino.

Tonight Stephen welcomes the author of In Search of Our Roots: How l9 Extraordinary African Americans Reclaimed Their Past, Henry Louis Gates Jr.

Tonight Stephen welcomes comedian, musician, author, actor and star of The Pink Panther 2, Steve Martin.

Tonight Stephen welcomes the author of How We Decide, Jonah Lehrer. Also, Stephen talks with New Yorker columnist James Surowiecki.

Tonight Stephen welcomes musical group TV on the Radio.

Tonight Stephen welcomes oceanographer Robert Ballard

Tonight Stephen welcomes the author of The Stuff of Thought: Language as a Window into Human Nature, Steven Pinker.

Tonight Stephen welcomes New Yorker columnist and author of Angels and Ages, Adam Gopnik.

Tonight Stephen welcomes the chief scientific advisor for chemistry.com, anthropology professor and author of Why Him? Why Her?: Finding Real Love By Understanding Your Personality Type, Helen Fisher.

Tonight Stephen welcomes former Supreme Court clerk, Slate publisher and co-author of The Great Decision: Jefferson, Adams, Marshall, and the Battle for the Supreme Court, Cliff Sloan.

Tonight Stephen welcomes the Mayor of Braddock, Pennsylvania, John Fetterman.

Tonight Stephen welcomes legendary country music singer/songwriter Kris Kristofferson.

Tonight Stephen welcomes musician David Byrne

Tonight Stephen welcomes chef and author of How to Cook Everything (Completely Revised 10th Anniversary Edition): 2,000 Simple Recipes for Great Food, Mark Bittman.

Tonight Stephen welcomes Carl Wilson.

Tonight Stephen welcomes the author of The Invention of Air, Steven Johnson.

Tonight Stephen welcomes musician Lisa Hannigan.

Tonight Stephen welcomes microbiologist and member of the Joint BioEnergy Institute, Dr. Jay Keasling Also Stephen talks with NASA's associate administrator for space operations Bill Gerstenmaier about the Kepler Probe and other space exploration.

Tonight Stephen welcomes Newsweek correspondent and author of The Thirteen American Arguments: Enduring Debates that Define and Inspire Our Country, Howard Fineman.

Tonight Stephen welcomes Peter Singer, author of The Life You Can Save: Acting Now to End World Poverty. Also, Stephen talks with the former chief economist for the International Monetary Fund, Simon Johnson about his comments comparing America's economy to an unstable emerging market.

Tonight Stephen welcomes the author of The Graveyard Book, Neil Gaiman.

Tonight Stephen welcomes the author of The Lost City of Z: A Tale of Deadly Obsession in the Amazon, David Grann.

Tonight Stephen welcomes the author of Engaging the Muslim World, Juan Cole

Tonight Stephen welcomes the president of Choose Responsibility, John McCardell

Tonight Stephen welcomes the chief astronomer at the Joel N. Bloom Observatory, Derrick Pitts.

Tonight Stephen welcomes the editor for slate.com and author of Good Book: The Bizarre, Hilarious, Disturbing, Marvelous, and Inspiring Things I Learned When I Read Every Single Word of the Bible, David Plotz.

Tonight Stephen welcomes the former head of Economic Research & Strategy for Sub Saharan Africa at Goldman Sachs and author of Dead Aid: Why Aid Is Not Working and How There Is a Better Way for Africa, Dambisa Moyo.

Tonight Stephen welcomes the co-founder of Twitter, Biz Stone.

Tonight Stephen welcomes the co-author of Banquo's Ghosts, Rich Lowry.

Tonight Stephen welcomes Jordan's Queen Noor.

Tonight Stephen welcomes the editor at large for the San Francisco Chronicle, Phil Bronstein.

Tonight Stephen welcomes Bible expert and author of Jesus, Interrupted: Revealing the Hidden Contradictions in the Bible (And Why We Don't Know About Them), Bart Ehrman.

Tonight Stephen welcomes psychotherapist and author of Bodies, Susie Orbach. Also, Stephen talks with NASA's Deputy Chief, Astronaut Office at the Johnson Space Center, Sunita Williams about the naming of the new node on the International Space Station.

Tonight Stephen welcomes the anchor of PBS' NewsHour and author of Oh, Jonny, Jim Lehrer.

Tonight Stephen welcomes the former head of the Office of Legal Council for both President Reagan and George Bush Sr., and author of Can a Catholic Support Him? Asking the Big Questions about Barack Obama, Doug Kmiec. Also, Stephen talks with the associate editor for opendemocracy.net, Kanishk Tharoor.

Tonight Stephen welcomes the Sheriff of Maricopa County, Arizona, Joe Arpaio. Also, Stephen talks with the second mate of the Maersk Alabama, Ken Quinn.

Tonight Stephen talks with Duke University men's basketball coach Mike Krzyzewski.

Tonight Stephen talks with host of This American Life, Ira Glass.

Tonight Stephen welcomes the West Africa Program Officer for Heifer International, Elizabeth Bintliff.

Tonight Stephen welcomes musical group The Decemberists.

Tonight Stephen welcomes journalist and author of Dumb Money: How Our Greatest Financial Minds Bankrupted the Nation, David Gross.

Also, Stephen talks with war correspondent Richard Engel.

Tonight Stephen welcomes former FDA commissioner and author of The End of Overeating: Taking Control of the Insatiable American Appetite, David Kessler.

Tonight Stephen welcomes the founder and executive director of the Drug Policy Alliance, Ethan Nadlemann.

Tonight Stephen welcomes the producer and director of Star Trek, J.J. Abrams.

Tonight Stephen welcomes the founder of Iraq and Afghanistan Veterans of America and author of Chasing Ghosts: A Soldier's Fight for America from Baghdad to Washington, Paul Rieckhoff. Also, Stephen talks with former Supreme Court clerk and Slate publisher Cliff Sloan.

Tonight Stephen welcomes journalist Laurie Garrett.

Tonight Stephen welcomes the co-founder of Terreform ONE, Mitchell Joachim.

Tonight Stephen welcomes Tamara Draut.

Tonight Stephen welcomes the producer & director of Angels & Demons, Ron Howard.

Tonight Stephen welcomes the author of In Defense of Food: An Eater's Manifesto, Michael Pollan.

Tonight Stephen welcomes folk singer Yusuf Islam.

Tonight Stephen welcomes a columnist for thedailybeast.com, Meghan McCain.

Tonight Stephen welcomes theatlantic,com columnist Walter Kirn.

Tonight Stephen welcomes the senior astronomer at the SETI Institute in California, Seth Shostak.

Tonight Stephen welcomes musical group Green day.

Sen. Byron Dorgan

Katty Kay

Eric Schlosser

Dag Soderberg

Stephen broadcasts from Iraq

Stephen broadcasts from Iraq

Stephen broadcasts from Iraq

Stephen broadcasts from Iraq

Tonight Stephen welcomes the head of President Obama's Economic Recovery Advisory Board, Austan Goolsbee.

Tonight Stephen welcomes the Chairman, President and CEO of Duke Energy, Jim Rogers.

Tonight Stephen welcomes the publisher of Talking Points Memo, Joshua Micah Marshall.

Tonight Stephen welcomes poet Paul Muldoon.

Tonight Stephen welcomes historian and author of The American Future: A History, Simon Schama.

Tonight Stephen welcomes military advisor and author of The Accidental Guerrilla: Fighting Small Wars in the Midst of a Big One, David Kilcullen.

Tonight Stephen welcomes philosopher, mechanic and author of Shop Class as Soulcraft: An Inquiry Into the Value of Work, Matthew Crawford.

Tonight Stephen welcomes gay rights activist Jim Fouratt.

Tonight Stephen welcomes the director of the Hayden Planetarium and the author of The Pluto Files, Neil deGrasse Tyson.

Tonight Stephen welcomes historian and author of 'What the Heck Are You Up To, Mr. President?': Jimmy Carter, America's 'Malaise,' and the Speech that Should Have Changed the Country, Kevin Mattson.

Tonight Stephen welcomes a columnist for The New York Times,, Nicholas Kristof.

Tonight Stephen welcomes mountain climber Ed Viesturs.

Paul Rieckhoff, Paul Krugman

Leymah Gbowee

Douglas Rushkoff

Edmund Andrews

Tonight Stephen welcomes Princeton physicist and author of Superstition: Belief in the Age of Science, Bob Park.

Tonight Stephen welcomes assistant professor of Pediatrics at the Indiana University School of Medicine, Dr. Aaron Carroll.

Tonight Stephen welcomes the author of Free: The Future of a Radical Price, Chris Anderson.

Tonight Stephen welcomes social critic and author of Cooperstown Confidential: Heroes, Rogues, and the Inside Story of the Baseball Hall of Fame, Zev Chafets.

Tonight Stephen welcomes musical group Movits!

Tonight Stephen welcomes the co-founder and editor in chief of the Huffington Post, Arianna Huffington. Also, Stephen talks with the "mother" of the Birther movement, Orly Taitz.

Tonight Stephen welcomes the contibuting editor for Harper's Magazine, Kevin Baker.

Tonight Stephen welcomes the director of The Hurt Locker, Kathryn Bigelow.

Tonight Stephen welcomes the former chief analyst for U.S. Central Command and co-author of Leading the Charge: Leadership Lessons from the Battlefield to the Boardroom, General Tony Zinni.

Tonight Stephen welcomes columnist for The New Yorker and author of Reset: How This Crisis Can Restore Our Values and Renew America, Kurt Anderson. Also, Stephen talks with Esquire magazine's cocktail historian Dave Wondrich.

Tonight Stephen welcomes law professor and candidate for Kansas' Secretary of State, Kris Kobach. Also, Stephen talks with Pennsylvania Congressman Joe Sestak, who is running against Arlen Spector.

Tonight Stephen welcomes actress and star of Julie & Julia, Meryl Streep.

Tonight Stephen welcomes California Senator and author of Blind Trust, Barbara Boxer.

Tonight Stephen welcomes the senior editor for The New Republic, Jonathan Cohn.

Tonight Stephen welcomes musician Mark Johnson.

Tonight Stephen welcomes professors of astronomy and astrophysics at the University of Pennsylvania, Mark Devlin.

Bill McKibben

Christopher Caldwell

Ang Lee

Robert Wright

Tonight Stephen welcomes the Mayor of Newark, New Jersey, Cory Booker.

Tonight Stephen welcomes CNN anchor Christiane Amanpour.

Tonight Stephen welcomes musical group The Flaming Lips.

Tonight Stephen welcomes the restaurant critic for the New York Times and author of Born Round: The Secret History of a Full-time Eater, Frank Bruni.

Shai Agassi

A.J. Jacobs

Ken Burns

Sheryl WuDunn

Matt Latimer

Richard Dawkins

Dr. Francis Collins

Arne Duncan

Lara Logan, the Mountain Goats

Alison Gopnik

Colin Beavan

Shashi Tharoor, Dr. Sanjay Gupta

David Javerbaum, Sylvia Earle

Amy Farrell, The RZA

Jerry Mitchell

Cornel West

Gail Collins

Brian Cox

Bill Simmons

Nicholas Thompson

Andrew Sullivan

Harold Evans

Chief William Bratton

Thomas Campbell

Maria Shriver

Christopher Caldwell

Woody Harrelson

Paul Goldberger

Malcolm Gladwell

Norah Jones

Elvis Costello

Cevin Soling

Sherman Alexie

Craig Watkins

Sec. Janet Napolitano

Tonight Stephen welcomes the co-founder and artistic director of the Bill Jones /Arni Zane Dance Company, Bill T. Jones.

Tonight Stephen welcomes lawyer and founder of Conservapedia, Andy Schlafly. Also, Stephen talks with Vermont Senator Bernie Sanders.

Tonight Stephen welcomes journalist Matt Taibbi.

Tonight Stephen welcomes CBS News chief foreign correspondent Lara Logan.

Tonight Stephen welcomes musician Alicia Keys.

Tonight Stephen welcomes rapper & actor Snoop Dogg.