David Letterman: Denis Leary, Albert Pujols, Jimmy Webb
Jay Leno: Bill O'Reilly, Adam Shankman, Lyle Lovett
Jimmy Kimmel: Johnny Knoxville, Amanda Crew, Grace Potter & the Nocturnals
Craig Ferguson: Steve Carell, She & Him
Jimmy Fallon: Kevin Kline, Chace Crawford, Hanson
Carson Daly: Antoine Fuqua, OK Go, Paolo Nutini (R 3/16/10)
Tavis Smiley: Michael Douglas
Daily Show: William Rosen
Colbert Report: Hephzibah Anderson
Chelsea Lately: Frank Grillo, Greg Proops, Loni Love, Josh Wolf
Lopez Tonight: Selena Gomez, Wilmer Valderrama, Rob Schneider
The View: Imagination Movers
Regis and Kelly: Anne Heche, Matt Bomer
Ellen DeGeneres: Adam Lambert, Marisa Miller (R 12/1/09)

David Letterman: Luke Wilson, Kristen Schaal, Dierks Bentley
Jay Leno: Piers Morgan, Joey King, Jaron and the Long Road to Love
Jimmy Kimmel: Christina Applegate, Hugh Hefner, Shane Mauss
Craig Ferguson: Morgan Freeman, the Black Keys
Jimmy Fallon: Rachel Weisz, Chris Bosh, Angelique Kidjo
Carson Daly: Kat Von D, Dan Smith, Garfunkel & Oates, Metric (R 3/17/10)
Tavis Smiley: Laurence Fishburne
Daily Show: Fareed Zakaria
Colbert Report: Thomas S. Blanton, Kevin Kline
Chelsea Lately: Kathy Griffin, Michael Yo, Whitney Cummings, Jo Koy
Lopez Tonight: Steve Carell, Maggie Q, Backstreet Boys
The View: America Ferrera
Regis and Kelly: Zac Efron, Cybill Shepherd
Ellen DeGeneres: Colin Farrell, Janelle Monae, Greyson Michael Chance (R 5/26/10)

David Letterman: Michael Keaton, Ron Dante, the Flaming Lips
Jay Leno: Eva Mendes, Isiah Mustafa, Robert Cray
Jimmy Kimmel: Zac Efron, Lisa Ling, Rhymefest
Craig Ferguson: Carrie Fisher, Ron Livingston
Jimmy Fallon: Luke Wilson, Tommy Davidson, Dierks Bentley
Carson Daly: Mark Duplass, Marina Orlova, Wild Light (R 3/18/10)
Tavis Smiley: Patrick Stewart
Daily Show: Robert O'Connell
Colbert Report: Elon Musk
Chelsea Lately: Chicken Charlie, Chris Hardwick, Heather McDonald, Rove McManus
Lopez Tonight: Diddy, Tony Robbins, Diddy-Dirty Money
The View: 50 Cent, guest co-host E.D. Hill
Regis and Kelly: Heidi Klum, Wilmer Valderama
Ellen DeGeneres: Ashton Kutcher, Chely Wright, Joseph Vincent (R 5/27/10)

David Letterman: Paul Rudd, Bill Burr, Interpol
Jay Leno: Jennifer Aniston, Jason Schwartzman, Stone Temple Pilots
Jimmy Kimmel: Matthew Fox, Josh Hutcherson, the Swell Season
Craig Ferguson: Neil Patrick Harris, Dr. Sanjay Gupta
Jimmy Fallon: 50 Cent, Lucy Punch, Of Montreal
Carson Daly: Aaron Paul, Shooter Jennings, 311 (R 3/19/10)
Tavis Smiley: Pam Grier
Daily Show: Liev Schreiber
Colbert Report: Andy Cohen
Chelsea Lately: Ron Livingston, Ross Mathews, Sarah Colonna, Guy Branum
Lopez Tonight: Zac Efron
The View: President Barack Obama
Regis and Kelly: Michael Keaton, Ann-Margret
Ellen DeGeneres: Russell Crowe, Eric Stonestreet (R 5/10/10)

David Letterman: Madonna, Harry Connick Jr. (R 9/30/09)
Jay Leno: Gabourey Sidibe, Jakub Vagner, Mike Vecchione
Jimmy Kimmel: Adam Carolla, 5-year-old baseball phenomenon Ariel Antigua, Raheem DeVaughn (R 7/21/10)
Craig Ferguson: Mary Lynn Rajskub, Christopher Gorham
Jimmy Fallon: Paul Rudd, Jordana Spiro, Green Day
Carson Daly: Paul Rieckhoff, Bad Religion, the Raveonettes (R 3/24/10)
Tavis Smiley: Richard Dreyfuss
Chelsea Lately: Arsenio Hall, Chris Franjola, Christina Pazsitzky, Ross Mathews (R 7/22/10)
The View: James Marsden, Patricia Clarkson, guest co-host Alec Mapa
Regis and Kelly: Kevin Kline, 3OH!3
Ellen DeGeneres: Ryan Phillippe, Court Yard Hounds, Miranda Kerr (R 5/12/10)

David Letterman: Will Ferrell, Damian Marley & Nas
Jay Leno: Sylvester Stallone, Criss Angel, Queens of the Stone Age
Jimmy Kimmel: Shaquille O'Neal, Ali Fedotowsky
Craig Ferguson: Eddie Izzard, George Hamilton
Jimmy Fallon: Kathy Griffin, Adam McKay, Trey Songz
Carson Daly: Mike Shinoda, Lupe Fiasco, Ronnie Faisst, the Airborne Toxic Event (R 3/25/10)
Tavis Smiley: Melissa Etheridge, Dr. Vincent Tuohy
Daily Show: Mary Roach
Colbert Report: Jimmy Cliff
Chelsea Lately: Gabrielle Reece
Lopez Tonight: Jim Parsons, Tricia Helfer
The View: Guest moderator Bryant Gumbel, guest co-host Mario Cantone
Regis and Kelly: Eva Mendes, Rachel Zoe, guest co-host Piers Morgan
Ellen DeGeneres: Amy Poehler, Fran Drescher (R 11/5/09)

David Letterman: Michael Cera, Herbie Hancock
Jay Leno: Betty White, Sam Trammell, Black Crowes
Jimmy Kimmel: Dylan McDermott, Mary Elizabeth Winstead, Flo Rida
Craig Ferguson: Jeffrey Tambor, Drew Thomas
Jimmy Fallon: Samuel L. Jackson, Connie Britton, Spoon
Carson Daly: Kenny Smith, David Lynch, Black Lips (R 3/26/10)
Tavis Smiley: Tony Hsieh, Molly Shannon
Daily Show: Will Ferrell
Colbert Report: Laura Ingraham
Chelsea Lately: Lisa Lampanelli
Lopez Tonight: Luke Wilson, Margaret Cho, Billy Ray Cyrus
The View: TBA
Regis and Kelly: Cat Deeley, Mike Posner
Ellen DeGeneres: George Lopez, Robin Wright Penn (R 11/9/09)

David Letterman: Julia Roberts, the Dead Weather
Jay Leno: Gordon Ramsay, Sofia Vergara, K'naan
Jimmy Kimmel: Eva Mendes, Callan McAuliffe, the Black Crowes
Craig Ferguson: Julie Chen, Paula Poundstone
Jimmy Fallon: Will Ferrell, Tim DeKay, Mike Posner
Carson Daly: Snoop Dogg, Josh Harris, Keane (R 3/30/10)
Tavis Smiley: Angelique Kidjo
Daily Show: Bruce Henderson
Colbert Report: Michael Posner
Chelsea Lately: TBA
Lopez Tonight: T.I., Idris Elba, Michael Ealy
The View: Cast members from "The Real Housewives of Washington D.C."
Regis and Kelly: Will Ferrell
Ellen DeGeneres: Jenny McCarthy, Cat Deeley (R 11/10/09)

David Letterman: Mark Wahlberg, dock diving dogs, Cory Kahaney, V.V. Brown
Jay Leno: Mickey Rourke, Plain White T's
Jimmy Kimmel: Ice Cube, Melissa Rycroft, Saving Abel
Craig Ferguson: Paris Hilton, Alex Dryden, Fred MacAulay
Jimmy Fallon: Denis Leary
Carson Daly: Jesse Ventura, Matthew Inman, Doves (R 3/31/10)
Tavis Smiley: Garry Shandling
Colbert Report: Savion Glover
Chelsea Lately: Eva Mendes
Lopez Tonight: Will Ferrell, Elisabeth Moss
The View: Lorraine Bracco, Vanessa Marcil Giovinazzo
Regis and Kelly: Christiane Amanpour
Ellen DeGeneres: Dwayne Johnson, Brian Williams, 12-year-old singer Rhap Salazar (R 11/17/10)

Jay Leno: Emma Thompson, comics from "Chelsea Lately"
Jimmy Kimmel: Rerun TBA
Craig Ferguson: Mark Wahlberg, Jacinda Barrett
Jimmy Fallon: Billy Crudup, Giovanni Ribisi, dancers from "Step Up 3D"
Carson Daly: Jared Harris, B.J. Penn, Los Campesinos! (R 5/11/10)
Tavis Smiley: Jakob Dylan, David Shenk
Regis and Kelly: Dylan McDermott
Ellen DeGeneres: Jon Bon Jovi, Bon Jovi, Kelly Osbourne & Louis van Amstel (R 11/23/09)

Jimmy Kimmel: Jada Pinkett Smith, Chris Harrison, Luke Bryan
Craig Ferguson: Lindsay Sloane, Vampire Weekend
Carson Daly: Victor Rasuk, Amy Purdy, Mishka (R 4/1/10)
Tavis Smiley: Rebecca Skloot, Arturo Sandoval
Regis and Kelly: Julia Roberts, Buddy Valastro, guest co-host Bryant Gumbel
Ellen DeGeneres: Scarlett Johansson, Melissa Etheridge, 7-year-old tap dancer Luke Spring (R 5/5/10)

Jimmy Kimmel: Sofia Vergara, Gordon Ramsay, Christian Scott
Craig Ferguson: David Duchovny, Dave Barry
Carson Daly: Greta Gerwig, Lance Briggs, Surfer Blood (R 4/2/10)
Regis and Kelly: Sylvester Stallone, Gabourey Sidibe
Ellen DeGeneres: Jennifer Garner, Joe Wong, Paolo Nutini (R 9/22/09)

Jimmy Kimmel: Jason Schwartzman, Reed Alexander, Joanna Newsom
Craig Ferguson: Maggie Gyllenhaal, Julie Gribble
Carson Daly: Ludacris, Anthony Jeselnik, the Living Sisters (R 4/6/10)
Regis and Kelly: Mary Louise Parker
Ellen DeGeneres: Courteney Cox, Ricky Gervais, Jessie James (R 9/23/09)

Jimmy Kimmel: Sylvester Stallone, Jason Statham, Buckcherry
Carson Daly: Gillian Jacobs, Dan Mintz, Never Shout Never (R 4/9/10)
Regis and Kelly: Jason Bateman