Stephen welcomes astrophysicist Neil deGrasse Tyson and a musical performance by Louis Cato.

Stephen welcomes TV host John Oliver and a musical performance by boygenius.

Stephen welcomes journalist Anderson Cooper and a musical performance by Japanese Breakfast.

Stephen welcomes actor Bob Odenkirk and comedian Fortune Feimster.

Stephen welcomes actor Arnold Schwarzenegger and a musical performance by Alex Newell.

Stephen welcomes actress Kerry Washington and Rep. Maxwell Frost.

Stephen welcomes actress Melissa Villaseñor.

Stephen welcomes comic John Mulaney and a musical performance by Darius Rucker.

Stephen welcomes actress Jada Pinkett Smith and comic Ricky Velez.

Stephen welcomes actors Daniel Radcliffe, Jonathan Groff, and Lindsay Mendez, plus a musical performance by Arlo Parks.

Stephen welcomes comic Jim Gaffigan and a musical performance by Caroline Polachek.

Stephen welcomes rock band Talking Heads and actor Mae Martin.

Stephen welcomes actor Keegan-Michael Key & producer Elle Key and filmmaker John Carpenter.

Stephen welcomes actor Henry Winkler and singer-songwriter Melissa Etheridge.

Stephen welcomes journalist John Dickerson with a musical performance by Alex Newell.

Stephen welcomes former United States Representative Adam Kinzinger and a musical performance by Willie Nelson.

Stephen welcomes transportation secretary Pete Buttigieg and singer Willie Nelson.

Stephen welcomes singer Barbra Streisand.

Stephen welcomes TV host Rachel Maddow and a musical performance by Gracie Abrams.

Stephen welcomes actor Paul Giamatti and actor Tom Blyth.

Stephen welcomes journalist Jonathan Karl and comic Maria Bamford.

Stephen welcomes TV personality David Letterman and a musical performance by The National.

Stephen welcomes actor Bradley Cooper and chef José Andrés.

Stephen welcomes actor Peter Dinklage and comic Tig Notaro.

Stephen welcomes former Representative Liz Cheney and a musical performance by Olivia Rodrigo.

Stephen welcomes actress Taraji P. Henson and a musical performance by Jason Isbell & the 400 Unit.

Stephen welcomes actor Jason Momoa and comic Robert Smigel.

Stephen welcomes director Greta Gerwig and actor Andrew Scott.

Stephen welcomes actor Kenan Thompson, Olivia Rodrigo performs, and First Drafts with Evie Colbert.

Stephen welcomes actor Adam Driver, singer-songwriter Jon Batiste, and a musical performance by Jon Batiste.

Stephen welcomes rapper Nicki Minaj and The Indict-mare Before Christmas narrated by Liam Neeson.

Stephen welcomes journalist Anderson Cooper, TV host Andy Cohen, and a musical performance by Louis Cato and the Late Show Band.

Stephen welcomes singer Barbra Streisand and comic Taylor Tomlinson.

Stephen welcomes journalist Gayle King, former professional basketball player Charles Barkley, and actor Ebon Moss-Bachrach.

Stephen welcomes actress America Ferrera and singer-songwriter Reneé Rapp.

Stephen welcomes actress Emily Blunt and actor Colman Domingo.

Stephen welcomes nicki Minaj takes The Colbert Questionert, musician Jeff Tweedy, a musical performance by Daniel Caesar, and special appearance by Taylor Tomlinson.

Stephen welcomes actor Clive Owen and actress Juno Temple.

Stephen welcomes rapper Common and comic Steven Wright.

Stephen welcomes comic Trevor Noah and American civil rights activist Ruby Bridges.

Stephen welcomes rapper André 3000 and author Jelani Cobb.

Stephen welcomes actor Austin Butler and actor Kingsley Ben-Adir.

Stephen welcomes filmmaker Martin Scorsese with a performance by Future Islands.

Stephen welcomes actor Bryan Cranston and journalist Michele Norris.

Stephen welcomes actress Emma Stone and Democratic National Committee chair, Jaime Harrison.

Stephen welcomes actress Demi Moore and actor Paul Walter Hauser.

Stephen welcomes actor John Cena, writer Kwame Alexander, and a musical performance by Asake.

Stephen welcomes Senator Elizabeth Warren and comic Usama Siddiquee.

Stephen welcomes TV host Joy-Ann Reid and basketball player A'ja Wilson.

Stephen welcomes filmmaker Christopher Nolan.

Stephen welcomes musician André 3000 takes The Colbert Questionert and actor Justin Hartley.

Stephen welcomes actor John Krasinski, actor Ryan Gosling, and special appearance by Jon Stewart.

Stephen welcomes TV host John Oliver and a musical performance byhuger Mike.

Stephen welcomes actor Matt Damon and actress Danielle Pinnock.

Stephen welcomes actor Mark Wahlberg and actress Lily Gladstone.

Stephen welcomes singer Billy Joel and a musical performance by Chappell Roan.

Stephen welcomes actor Timothée Chalamet and Julio Torres.

Stephen welcomes actor Josh Brolin and Amanda Gorman & Jan Vogler.

Stephen welcomes political commentator Chris Hayes and actress Carrie Preston.

Stephen welcomes actress Rebecca Ferguson and filmmaker Denis Villeneuve.

Stephen welcomes TV personality RuPaul and author Yuval Noah Harari.

Stephen welcomes Senator Bernie Sanders and a musical performance by Bleachers.

Stephen welcomes astrophysicist Neil deGrasse Tyson and a stand up performance by Ariel Elias.

Stephen welcomes political analyst John Dickerson and a musical performance by De La Soul.

Stephen welcomes actress Kristen Stewart and actor Tom Hollander.

Stephen welcomes actress Diane Lane and actor Patton Oswalt.

Stephen welcomes actor Paul Rudd and journalist Cecilia Vega.

Stephen welcomes an interview with and musical performance by Paul Simon.

Stephen welcomes justice Stephen Breyer and professional golfer Justin Thomas.

Stephen welcomes actress Carol Burnett and a musical performance by Waxahatchee & MJ Lenderman.

Stephen welcomes actor Liam Neeson and journalist Fareed Zakaria.

Stephen welcomes actress Hannah Waddingham and Matt Damon takes The Colbert Questionert.

Stephen welcomes journalist Savannah Guthrie and actor Tim Blake Nelson.

Stephen welcomes actress Gillian Anderson, actress Sonequa Martin-Green, and a musical performance by Remi Wolf.

Stephen welcomes actor Steve Buscemi and literary critic Henry Louis Gates Jr.

Stephen welcomes Rep. Alexandria Ocasio-Cortez and a musical performance by Tyla.

Stephen welcomes singer Maren Morris and actor Demetri Martin.

Stephen welcomes journalist Christiane Amanpour and actor Wilmer Valderrama.

Stephen welcomes author Salman Rushdie, and actress Anna Sawai.

Stephen welcomes actor Orlando Bloom, actor George Takei, and a musical performance by Maggie Rogers.

Stephen welcomes actor John Lithgow and historian Doris Kearns Goodwin.

Stephen welcomes actress Sandra Oh, actor Reid Scott, and actor Daniel Radcliffe.

Stephen welcomes actress Jean Smart and actress Gayle Rankin.

Stephen welcomes actor Jeff Daniels, comic Hannah Einbinder, and Béla Fleck sits in with Louis Cato & the Late Show Band.

Stephen welcomes TV host Phil Keoghan, a musical performance by Jacob Collier, and Carol Burnett takes "The Colbert Questionert".

Stephen welcomes actor John Leguizamo and attorney Laura Coates.

Stephen welcomes actor Ethan Hawke and actor Cedric the Entertainer.

Stephen welcomes actress Tiffany Haddish and screenwriter Meredith Scardino.

Stephen welcomes political analyst Jen Psaki and a musical performance by Elyanna.

Stephen welcomes actress Desi Lydic and Ryan Gosling takes "The Colbert Questionert".

Stephen welcomes actor Steve Carell and a musical performance by Paul Simon.

Stephen welcomes singer Jennifer Hudson and actress Marisa Abela.

Stephen welcomes TV host George Stephanopoulos and comic Michelle Buteau.

Stephen welcomes actress Claudia Jessie, a musical performance by Norah Jones, and David Letterman takes The Colbert Questionert.

Stephen welcomes actress Sarah Paulson, actor Paul Scheer, and performance by the Broadway cast of "Merrily We Roll Along".

Stephen welcomes an interview with and musical performance by Billie Eilish.

Stephen welcomes actress Anya Taylor-Joy and Second Gentleman Doug Emhoff.

Stephen welcomes actor Chris Hemsworth and business magnate James Dyson.

Stephen welcomes singer-songwriter Alicia Keys and actor Stephen Merchant.

Stephen welcomes actor Viggo Mortensen, actress Olivia Cooke, and a performance by the cast of "Illinoise".

Stephen welcomes singer Jon Bon Jovi and comedian Tig Notaro.

Stephen welcomes actress Julia Louis-Dreyfus and a musical performance by Hozier.

Stephen welcomes Senator Cory Booker and a musical performance by Billie Eilish.

Stephen welcomes actor Jake Gyllenhaal and actress Chloe Fineman.

Stephen welcomes TV host Seth Meyers and a musical performance by Omar Apollo.

Stephen welcomes actor Jude Law and a musical performance by Nathaniel Rateliff & The Night Sweats.

Stephen welcomes Dr. Anthony Fauci and actor Callum Turner.

Stephen welcomes podcast hosts Jon Favreau, Jon Lovett & Tommy Vietor, and a musical performance by Lake Street Dive.

Stephen welcomes actress Cynthia Erivo and Representative Jamaal Bowman.

Stephen welcomes actor Jeremy Allen White and director Ava DuVernay.

Stephen welcomes actor Michael Douglas, news anchor Abby Phillip, and "Rescue Dog Rescue" with Antony Starr, Chace Crawford & Colby Minifie.

Stephen welcomes former tennis player Serena Williams and actor Andrew McCarthy.

Stephen welcomes Michigan Gov. Gretchen Whitmer and cooking with Martha Stewart.

Stephen welcomes journalist John Dickerson and a musical performance by Jessica Pratt.

Stephen welcomes Rep. Adam Kinzinger and a musical performance by Bikinihug.

Stephen welcomes Senator Elizabeth Warren and a musical performance by Loudon Wainwright III.

Stephen welcomes actor Glen Powell and radio & TV personality Charlamagne Tha God.

Stephen welcomes Senator Bernie Sanders and a musical performance by OneRepublic.

Stephen welcomes actor Keanu Reeves and a musical performance by Charles Wesley Godwin.

Stephen welcomes actor Matthew Macfadyen and director Jon M. Chu.

Stephen welcomes philanthropist Melinda French Gates and actress Saoirse-Monica Jackson.

Stephen welcomes comic Kevin Hart and a stand up performance by Erica Rhodes.

Stephen welcomes journalist Kaitlan Collins and actor Walton Goggins.

Stephen welcomes actor Bowen Yang and musician Nick Cave.

Stephen welcomes TV host Alex Wagner and comic Ali Macofsky.

Stephen welcomes actor Hiroyuki Sanada and a musical performance by Koe Wetzel and Jessie Murph. Sean Hayes helps with "Community Calendar" and Billie Eilish takes "The Colbert Questionert".

Stephen welcomes former U.S. Secretary of State Hillary Rodham Clinton and actress Julia Louis-Dreyfus.

Stephen welcomes speaker Nancy Pelosi and Rep. Hakeem Jeffries.

Stephen welcomes U.S. Secretary of Transportation Pete Buttigieg and a musical performance by Chance the Rapper.

Stephen welcomes Rep. Alexandria Ocasio-Cortez and a musical performance by Mavis Staples & Jeff Tweedy.