Tonight, we welcome Paul Giamatti, the acclaimed star of "Sideways." He'll be sharing his insights on the experience of being part of a film that is both thoughtful and beautifully performed.

Tonight, actor Don Cheadle discusses his part in the film "Hotel Rwanda."

This evening: a presentation by author Howard Zinn.

Tonight, we welcome author John Grisham.

Tonight features actor Samuel L. Jackson, who will discuss his latest film and the diverse array of projects he has undertaken throughout the year.

Tonight features actor Dennis Quaid, alongside Lewis's performance of "Back In Black."

Tonight, we welcome actress Annette Bening.

Tonight, we turn to ABC's Brian Ross for the latest.

This evening, we welcome Jim Wallis, author of "God's Politics: Why the Right Gets It Wrong and the Left Doesn't Get It."

Tonight, we welcome author Michael Beschloss.

Tonight, Senator Joe Lieberman. The Democratic Senator will share his approach to navigating the complexities of the Republican party.

Tonight, we welcome Richard Viguerie, author of "America's Right Turn: How Conservatives Used New and Alternative Media to Take Power."

Tonight, we welcome Seymour Hersh, the acclaimed author of "Chain of Command: The Road from 9/11 to Abu Ghraib."

Tonight, actor John Leguizamo joins us. He'll be sharing insights on his experience at Sundance, his passion for skiing, and the rather flattering title of "sexy hombre" he's recently acquired.

Tonight, we welcome Christine Todd Whitman, former Administrator of the Environmental Protection Agency. She will be discussing her new book, "It's My Party Too."

Tonight, we welcome Fareed Zakaria, author of "The Future of Freedom."

Tonight, the esteemed Paula Abdul takes her seat as judge on "American Idol."

Tonight features Anderson Cooper, host of "Anderson Cooper 360."

Tonight, we welcome author Joe Klein.

Tonight, we welcome author Redmond O'Hanlon.

Tonight: Eric Idle, beloved of Monty Python!

Tonight features actor Alan Cumming, who joins Jon for a conversation exploring the playful double meanings inherent in his name. We also have Lewis with "Back In Black."

Tonight, please welcome Rachel Weisz, star of "Constantine."

Tonight, join Peter Jennings as he presents "Peter Jennings Reporting: UFOs - Seeing Is Believing."

Tonight features Christina Ricci, acclaimed star of "Cursed," alongside Lewis's "Back In Black."

Tonight: Senator Ben Nelson. Senator Ben Nelson of Nebraska joins Jon to discuss the unexpected pleasure of a nickname bestowed upon him by George W.

Tonight, we welcome Nancy Soderberg, author of "The Superpower Myth: The Use and Misuse of American Might."

Tonight, Dwayne "The Rock" Johnson. He'll be speaking about his career shift, from professional wrestling to Hollywood.

Tonight, Ari Fleischer, former White House press secretary, will address the enduring relevance of the press corps. He will offer his perspective on whether the traditional role of journalists in holding power accountable has become outdate…

This evening, we welcome Melissa Boyle Mahle, author of "Denial and Deception: An Insider's View of the CIA from Iran-Contra to 9/11."

Tonight, Jon Stewart assists NBC News anchor Brian Williams in distinguishing between the satirical perspective of *The Daily Show* and the serious nature of his own broadcast.

Tonight, actor Bruce Willis discusses his latest film, "Hostage."

Tonight, economist Paul Krugman will discuss his latest book, focusing on the possible unraveling of the New Deal's legacy.

Tonight, Princeton philosophy professor Harry Frankfurt will discuss his book, "On Bullshit."

Tonight, author Tom Fenton offers insight into the current state of the news industry, exploring the factors contributing to its unprecedented decline.

Tonight's guest is the Reverend Al Green. He will share music with Jon, offering insights into the profound resonance of his own voice.

Tonight, Craig Ferguson, host of *The Late Late Show*, makes a guest appearance. Ferguson himself often describes his identity as belonging exclusively to the realm of puppetry.

Tonight, actress Sandra Bullock joins us. She will speak about the compelling force inherent in handling an automatic weapon.

Tonight features Catherine Keener, acclaimed star of "The Interpreter." Also, Lewis Black will be joining us.

After a year-long absence spent working on other projects, Steve Carell made a brief appearance in a segment of the program.

Tonight: RZA, a core member of Wu-Tang Clan.

Steve Carell appeared in a sketch on the program, playing a character called Produce Pete. This marked his second appearance in the last few days, a return after a hiatus of over a year.

Tonight, New York Times columnist Thomas Friedman will discuss his latest book, "The World is Flat."

Tonight features Matthew McConaughey, star of "Sahara."

Tonight, actress Drew Barrymore will be a guest. She’ll discuss her unexpected visit to Fenway Park.

Tonight's program features Byron York, author of "The Vast Left Wing Conspiracy." We also delve into the topic of "Tattoo Discrimination," with reports from Stephen Colbert.

Tonight welcomes Senator Bob Dole, author of the acclaimed memoir, "One Soldier's Story." Following him, Lewis Black will bring his signature wit and commentary to the stage.

Tonight features John P. Avlon, author of "Independent Nation." We also have Ed Helms reporting on "Promoting the US."

Tonight features David Duchovny, star of "Trust the Man." Also, Samantha Bee delivers a report on the complexities of "Casting a Town Hall Meeting."

Tonight features Robert Reich, who will be speaking about his book, "Reason: Why Liberals Will Win the Battle for America." Following that, Stephen Colbert appears on "This Week in God."

Tonight, we welcome Sarah Vowell, the acclaimed author of "Assassination Vacation."

Tonight features Dennis Miller, host of CNBC's "Dennis Miller," alongside Rob Corddry, who will be reporting on "Dormaid."

Tonight welcomes Reza Aslan, author of "No god but God." We also present "International Pamphlet."

Tonight's program features Floyd Abrams, author of "Speaking Freely." We also have Ed Helms, who will be reporting on "Tax Shelter."

Tonight features Ice Cube, the acclaimed star of "XXX: State of the Union." Also, Samantha Bee delves into the story of Weyco, Inc.

Tonight welcomes Christina Hoff Somers, author of *One Nation Under Therapy*. We also present "International Pamphlet."

Tonight, we welcome Steve Levitt, the acclaimed author of "Freakonomics."

This evening features Zell Miller, author of "A Deficit of Decency" and United States Senator representing Georgia.

Tonight features CNN International Correspondent Christiane Amanpour. Also, Stephen Colbert examines the curious phenomenon of the "Rick James Sign."

Tonight features Martin Short, the acclaimed star of "Jiminy Glick in Lalawood." Also, Jon delves into the burgeoning world of weblogs on television in a segment called "Blogisphere."

Tonight's program features former Secretary of Homeland Security, Tom Ridge. Also, Bob Wiltfong reports on a story titled "Sexy Cheerleading Band."

Tonight, please welcome Kathleen Turner, acclaimed star of "Who's Afraid of Virginia Woolf?"

Tonight's program features Wanda Sykes, acclaimed for her role in "Monster-in-Law." Samantha Bee presents a report on "Heavy Betting." And Jon delves into the growing presence of weblogs on television in a segment called "Blogisphere."

Tonight features Al Roker, from NBC's "Today Show." Also, Lewis Black returns with a new installment of "Back In Black."

Tonight's guest is comedian and actress Tracey Ullman.

Tonight features Gerald Posner, author of "Secrets of the Kingdom." Also, Rob Corddry brings us a report on "The Price of a Gallon of Gas."

Tonight, we welcome back Bo Bice, the captivating runner-up from "American Idol." And following his performance, a look at the most pressing news of the day.

Tonight features Russell Crowe, star of "Cinderella Man." Also, Ed Helms recounts the remarkable story of a man who saved a chicken from certain peril.

Tonight features Newt Gingrich, author of "Never Call Retreat." Following that, Stephen Colbert presents "This Week in God."

Tonight's program features Steven Johnson, author of "Everything Bad Is Good for You." We also have Ed Helms, who will be reporting on the latest developments with the "Guns for Tots Revisited" initiative.

Tonight, former Secretary of State Colin Powell joins us. We'll also bring you the most important news of the day.

Tonight features Matt Lauer, co-anchor of "The Today Show." Also, Samantha Bee brings her report on the burgeoning movement within Wal-Mart to organize for union representation.

Tonight, we welcome Larry Diamond, author of "Squandered Victory: The American Occupation and the Bungled Effort to Bring Democracy to Iraq." We'll also bring you the latest headlines.

Tonight: Will Ferrell, the beloved star of "Bewitched."

Tonight's program features Flynt Leverett, author of "Inheriting Syria." We also have Ed Helms with a report on the surprising phenomenon of the "Speedo Ban."

Tonight, we welcome Kenneth Timmerman, author of "Countdown to Crisis."

Tonight features musician Ringo Starr, alongside Rob Corddry's report on "Visiting America."

Tonight features musician Dwight Yoakam, who will be discussing his new CD, "Blame The Vain." We’ll also have Lewis, and coverage of "Back In Black," alongside the day's most important headlines.

Tonight features journalist Bill Moyers, followed by Samantha Bee's report on the subject of bullying.

Tonight features a conversation with Democratic National Committee Chairman Howard Dean. Following that, Stephen Colbert offers his perspective on the leadership of the Republican Party chairmen.

Tonight features Hanna Rosin, alongside Jon as he examines the President’s present priorities.

Tonight features Morgan Spurlock, Executive Producer of "30 Days," alongside Lewis' "Back In Black."

Tonight welcomes Marci Hamilton, author of "God vs. the Gavel." We also have Ed Helms with a report on "The Fountain of Youth."

Tonight welcomes Matt Taibbi, author of "Spanking the Donkey." Following that, we present "Wide World Quasi Sports."

Tonight features Bernard Goldberg, author of "100 People Who Are Screwing Up America." Following that, Stephen Colbert offers a report on Network Storm Tracker coverage.

Tonight features Michael Isikoff, editor of Newsweek, in conversation. Also, Rob Corddry delves into the surprisingly intricate world of "Harry Potter Book Security."

Tonight: Washington Post editors Bob Woodward and Carl Bernstein.

Tonight features Billy Bob Thornton, acclaimed star of "Bad News Bears," alongside Lewis Black.

Tonight's program features Robert F. Kennedy, Jr., co-host of "Ring of Fire." Also, Rob Corddry and Ed Helms offer their analysis of the President's nominee to the Supreme Court.

Tonight's program features Fareed Zakaria, editor of Newsweek International. We also have Samantha Bee, who will be discussing the story of "Schwarzenegger Pothole."

Tonight features Senator Rick Santorum of Pennsylvania. Also, Rob Corddry offers his report on Lance Armstrong's victory in the Tour de France.

Tonight features Diane Lane, star of "Must Love Dogs." Samantha Bee tackles the topic of "Gay Nascar," and Lewis Black returns with a new installment of "Back In Black."

Tonight features Bob Costas, host of "On the Record." Also, Jon Stewart covers the news of New York State Attorney General Eliot Spitzer's lawsuit against the music industry. The suit centers on payola—the illicit practice of record compani…

Tonight features Maggie Gyllenhaal, known for her work on "Happy Endings." Following her appearance, Stephen Colbert will be joined by "This Week in God."

This evening: Senator Joe Biden, representing Delaware.

Tonight, we welcome John Crawford, author of "The Last True Story I'll Ever Tell." Following his appearance, we'll bring you the day's most important headlines.

Tonight features Miles O'Brien, anchor of CNN's "American Morning." Also, Stephen Colbert delves into the story of "Cooter."

Tonight features Paul Rudd, known for his role in "The 40-Year-Old Virgin." We also present the initial segment of "Indecision 2008."

Tonight features actress Kate Hudson, known for her role in "The Skeleton Key." Also, Rob Corddry delves into the topic of ethanol.

Tonight features journalist John Hockenberry, alongside a comprehensive review of the day's most significant news.

Tonight features Andre Benjamin, acclaimed star of "Four Brothers." Also, Stephen Colbert delves into the topic of faith with a report on "This Week in God."

Tonight, we welcome Steve Carell, the acclaimed star of "The 40-Year-Old Virgin." We'll also bring you the most pressing news of the day.

Tonight features investigative journalist Seymour Hersh. Also, Ed Helms journeys to Pittsburgh to cover the Bassmaster Classic Tournament, where he encounters the sport’s most divisive personality in "Punk Bass Fisherman."

Tonight welcomes John Irving, the acclaimed author of "Until I Find You." We also have Ed Helms, who will be discussing the intriguing question of "So You Want to be a Supreme Court Judge?"

This evening features John H. Richardson, author of "My Father The Spy," alongside Lewis "Back In" Black.

Tonight features Chris Wallace, host of "FOX News Sunday," alongside a comprehensive review of the day's most important news.

Tonight features Rachel Weisz, acclaimed star of "The Constant Gardener." Also, Stephen Colbert brings his report on "This Week in God."

Tonight's program features Senator Trent Lott of Mississippi, who will discuss his recently published memoir, "Herding Cats: A Life in Politics." Following this, Samantha Bee presents an investigation into the recent removal of councilmen f…

Tonight's program features Christopher Hitchens, author of "Thomas Jefferson: Author of America." We'll also bring you the day's most important news.

Tonight, we welcome Dr. Marc Siegel, author of "False Alarm." And we'll bring you the most important news of the day.

This evening features Samuel L. Jackson, the acclaimed star of "The Man," alongside the day's most important news.

Tonight, the anchor of NBC Nightly News, Brian Williams.

Tonight features Chris Mooney, author of "The Republican War on Science." We also journey with Ed Helms on an "Evolution Heritage Tour" through Dayton, Tennessee. This is the first installment of *Evolution Schmevolution: A Daily Show S…

Tonight features Kurt Vonnegut, author of "A Man Without a Country." We also join Ed Helms as he explores the "Evolution Heritage Tour" at the Bronx Zoo. This is the second day of "Evolution Schmevolution: A Daily Show Special Report."

Tonight features a guest panel discussion, followed by Ed Helms' exploration of an "Evolution Heritage Tour" at a Creationist gift shop. This is the third day of *Evolution Schmevolution: A Daily Show Special Report*.

Tonight, we welcome actress Gwyneth Paltrow, known for her role in "Proof." This is the fourth day of "Evolution Schmevolution: A Daily Show Special Report."

Tonight features Alan Alda, author of "Never Have Your Dog Stuffed." Also, new correspondent Dan Bakkedahl investigates the curious phenomenon of "bumvertising."

Tonight features Ricky Gervais, acclaimed star of "The Office." Additionally, Jon offers a detailed examination of the history of the White House press secretary.

Tonight features George Clooney, the acclaimed star of "Good Night, and Good Luck," in conversation. We'll also bring you the most important news of the day.

Tonight features Dr. Irwin Redlener, Director of the National Center for Disaster Preparedness. Following that, Stephen Colbert appears on "This Week in God."

Tonight, we welcome Viggo Mortensen, acclaimed star of "A History of Violence."

Tonight: Jeff Garlin, renowned for his work on "Curb Your Enthusiasm."

This evening: Senator Charles Schumer, representing the State of New York.

This evening features David Rakoff, author of "Don't Get Too Comfortable," alongside Lewis Black, presenting his show "Back in Black."

Tonight features Cameron Diaz, the acclaimed star of "In Her Shoes." Also, Nate Corddry brings us a report from the historic U.S.S. Iowa.

This evening: John Edwards, former United States Senator for the Democratic Party.

Tonight features Philip Seymour Hoffman, the acclaimed star of "Capote." Also, Rob Corddry brings us a report on the unusual fundraising efforts of "Girls Gone Wild for Katrina Relief Aid."

Tonight, the incomparable Dolly Parton graces the stage.

Tonight features Bill O'Reilly, host of "The O'Reilly Factor." Also, Lewis Black will be joining us with "Back in Black."

Tonight features Louis Freeh, author of "My FBI," in conversation. Following that, Rob Corddry presents "This Week in God."

Tonight: Dwayne "The Rock" Johnson stars in *Doom*.

Tonight features Bill Kristol, managing editor of *The Weekly Standard*. Following that, Lewis Black presents his performance, "Back in Black."

This evening: Please join us for a conversation with Al Franken, author of "The Truth (with Jokes)."

Tonight, we welcome Doris Kearns Goodwin, author of the acclaimed "Team of Rivals."

Tonight, we welcome Janis Karpinski, author of the compelling memoir, "One Woman's Army."

Tonight, the host of Weekends at the D.L., D.L. Hughley, joins us.

Tonight: Senator Barbara Boxer of California.

Tonight, we welcome Mike Wallace, author of *Between You and Me: A Memoir*. And Rob Corddry joins us with a report on "The Price of a Gallon of Gas."

Tonight, Robert Ray, the former independent counsel who investigated both the Whitewater controversy and the Monica Lewinsky matter during the Clinton administration.

This evening: Senator Barack Obama of Illinois.

This evening: Senator John McCain of Arizona.

Tonight's program features Keira Knightley, acclaimed for her role in "Pride & Prejudice." Also joining us are Rob Corddry, appearing on "You Paid For It... With Your Money," and Lewis Black, bringing his signature wit to "Back in Black."

Tonight welcomes Chris Elliott, author of "The Shroud of the Thwacker." We also have "This Week in God" with Rob Corddry.

Tonight: The spotlight shines on Martha Stewart herself, the celebrated figure from "Martha and The Apprentice."

Tonight welcomes Rosario Dawson, acclaimed star of *Rent*. And joining us is Lewis Black, delivering his signature comedic take with "Back in Black."

This evening: John Hodgman, author of "The Areas of My Expertise."

This evening, we welcome Richard Clarke, author of "The Scorpion's Gate."

Tonight, we welcome Adrien Brody, star of "King Kong."

Tonight, we welcome Peggy Noonan, author of *John Paul the Great: Remembering a Spiritual Father*.

Tonight: Congresswoman Nancy Pelosi of California.

Tonight, the White Stripes will be performing.

This evening features former President Jimmy Carter, author of *Our Endangered Values: America's Moral Crisis*.

Tonight, please welcome Michelle Yeoh, star of *Memoirs of a Geisha*.

This evening features author and historian David McCullough.

Tonight, we welcome Ken Auletta, editor of *The New Yorker*.

Tonight: The unmistakable voice of radio, Howard Stern.

Tonight, we welcome Tom Brokaw, the distinguished former anchor of NBC Nightly News.

Tonight, please welcome Sarah Jessica Parker, star of *The Family Stone*.