Megan Mullally
Self - Host (76 eps)
Bret Simmons
Self - Music Director / Keyboardist (76 eps)
Tom Bergeron
Self - Guest (3 eps)
Clay Aiken
Self - Musical Guest (3 eps)
Will Ferrell
Self - Guest (2 eps)
Benji Schwimmer
Self - Guest (2 eps)
Lisa Kudrow
Self - Guest (2 eps)
Julia Louis-Dreyfus
Self - Guest (2 eps)
Debra Messing
Self - Guest (2 eps)
George Lopez
Self - Guest (2 eps)
Tim Bagley
Self - Guest (2 eps)
Chris Noth
Self - Guest (2 eps)
Patricia Heaton
Self - Guest (2 eps)
Tim Daly
Self - Guest (2 eps)
Laura Linney
Self - Guest (2 eps)
Rob Morrow
Self - Guest (2 eps)
Ruben Studdard
Self - Guest (2 eps)
Josh Duhamel
Self - Guest (2 eps)
Kristin Chenoweth
Self - Guest (2 eps)
Neil Patrick Harris
Self - Guest (2 eps)
Jamie Kennedy
Self - Guest (2 eps)
Cheryl Hines
Self - Guest (2 eps)
Rusty Schwimmer
Self - Guest (2 eps)
Danny Seo
Self - Guest (2 eps)
Phil Pfister
Self - Guest (2 eps)
Eric Stromer
Self - Guest (2 eps)
Nathan Burton
Self - Guest (2 eps)
Daryl Hall
Self - Musical Guest (2 eps)
John Oates
Self - Musical Guest (2 eps)
Taylor Hicks
Self - Musical Guest (2 eps)
Kimberley Locke
Self - Musical Guest (2 eps)
Jenny McCarthy-Wahlberg
Self - Guest (1 eps)
Eva Mendes
Self - Guest (1 eps)
Heidi Groskreutz
Self - Guest (1 eps)
Adam Rodriguez
Self - Guest (1 eps)
Carol Burnett
Self - Guest (1 eps)
Rainn Wilson
Self - Guest (1 eps)
Felicity Huffman
Self - Guest (1 eps)
Enrique Murciano
Self - Guest (1 eps)
Criss Angel
Self - Guest (1 eps)
Mario López
Self - Guest (1 eps)
Omar Epps
Self - Guest (1 eps)
Jennifer Finnigan
Self - Guest (1 eps)
Sela Ward
Self - Guest (1 eps)
Duane Martin
Self - Guest (1 eps)
Jesse McCartney
Self - Guest (1 eps)
Jane Kaczmarek
Self - Guest (1 eps)
Masi Oka
Self - Guest (1 eps)
Elizabeth Perkins
Self - Guest (1 eps)
Connie Britton
Self - Guest (1 eps)
Michael Clarke Duncan
Self - Guest (1 eps)
Jennifer Love Hewitt
Self - Guest (1 eps)
Jonny Lee Miller
Self - Guest (1 eps)
Virginia Madsen
Self - Guest (1 eps)
Noah Gray-Cabey
Self - Guest (1 eps)
Marcia Cross
Self - Guest (1 eps)
Clinton Kelly
Self - Guest (1 eps)
Isaiah Washington
Self - Guest (1 eps)
Molly Ringwald
Self - Guest (1 eps)
Wanda Sykes
Self - Guest (1 eps)
Goran Višnjić
Self - Guest (1 eps)
Peter Gallagher
Self - Guest (1 eps)
Tyler James Williams
Self - Guest (1 eps)
Bradley Whitford
Self - Guest (1 eps)
Shelley Morrison
Self - Guest (1 eps)
Eric Mabius
Self - Guest (1 eps)
Mario Vazquez
Self - Guest (1 eps)
Cheyenne Kimball
Self - Guest (1 eps)
Ricardo Chavira
Self - Guest (1 eps)
Merv Griffin
Self - Guest (1 eps)
Kim Raver
Self - Guest (1 eps)
Jennifer Egan
Self - Guest (1 eps)
Anne Heche
Self - Guest (1 eps)
Joshua Bell
Self - Musical Guest (1 eps)
Alison Lohman
Self - Guest (1 eps)
Mark Leyner
Self - Guest (1 eps)
Billy Goldberg
Self - Guest (1 eps)
Aly Michalka
Self - Guest (1 eps)
AJ Michalka
Self - Guest (1 eps)
Nick Carter
Self - Guest (1 eps)
Aaron Carter
Self - Guest (1 eps)
Jamie Lee Curtis
Self - Guest (1 eps)
Amy Smart
Self - Guest (1 eps)
Taylor Swift
Self - Musical Guest (1 eps)
Lauren Holly
Self - Guest (1 eps)
Daniel Dae Kim
Self - Guest (1 eps)
Cloris Leachman
Self - Guest (1 eps)
Jensen Ackles
Self - Guest (1 eps)
James Denton
Self - Guest (1 eps)
Maria Sansone
Self - Guest (1 eps)
Angela Kinsey
Self - Guest (1 eps)
JoJo
Self - Guest (1 eps)
Steven Weber
Self - Guest (1 eps)
Audra McDonald
Self - Guest (1 eps)
Kevin Federline
Self - Guest (1 eps)
Jeffrey Sebelia
Self - Guest (1 eps)
Meat Loaf
Self - Musical Guest (1 eps)
Sean Hayes
Self - Guest (1 eps)
Eddie Cibrian
Self - Guest (1 eps)
Cesar Millan
Self - Guest (1 eps)
Mitch Albom
Self - Guest (1 eps)
Barry Manilow
Self - Musical Guest (1 eps)
Parminder Nagra
Self - Guest (1 eps)
Mark Harmon
Self - Guest (1 eps)
Constance Zimmer
Self - Guest (1 eps)
Melora Hardin
Self - Guest (1 eps)
Kevin Nealon
Self - Guest (1 eps)
Antonio Sabàto, Jr.
Self - Guest (1 eps)
Bob Saget
Self - Guest (1 eps)
Sue Johanson
Self - Guest (1 eps)
Molly Sims
Self - Guest (1 eps)
Andrea Bowen
Self - Guest (1 eps)
Tim Gunn
Self - Guest (1 eps)
David Hyde Pierce
Self - Guest (1 eps)
Linda Cardellini
Self (1 eps)
Taylor Ware
Self - Guest (1 eps)
Patricia Arquette
Self - Guest (1 eps)
Dax Shepard
Self - Guest (1 eps)
Tom Arnold
Self - Guest (1 eps)
Reba McEntire
Self - Guest (1 eps)
Patrick Wilson
Self - Guest (1 eps)
Trista Sutter
Self - Guest (1 eps)
Ryan Sutter
Self - Guest (1 eps)
Rupert Boneham
Self - Guest (1 eps)
Sharon Stone
Self - Guest (1 eps)
Scott Foley
Self - Guest (1 eps)
Paz Vega
Self - Guest (1 eps)
Wayne Brady
Self - Guest (1 eps)
Camryn Manheim
Self - Guest (1 eps)
James Lesure
Self - Guest (1 eps)
Josh Radnor
Self - Guest (1 eps)
Alyson Hannigan
Self - Guest (1 eps)
Jason Segel
Self - Guest (1 eps)
Cobie Smulders
Self - Guest (1 eps)
David Boreanaz
Self - Guest (1 eps)
Julianne Nicholson
Self - Guest (1 eps)
Bianca Ryan
Self - Guest (1 eps)
Matthew Broderick
Self - Guest (1 eps)
Donald Faison
Self - Guest (1 eps)
Brian Baumgartner
Self - Guest (1 eps)
Catherine Lloyd Burns
Self - Guest (1 eps)
Tracy Morgan
Self - Guest (1 eps)
Melissa Peterman
Self - Guest (1 eps)
Jarod Miller
Self - Guest (1 eps)
Carrie Fisher
Self - Guest (1 eps)
Paul Rodríguez
Self - Guest (1 eps)
Nadine Velazquez
Self - Guest (1 eps)
Rosanna Arquette
Self - Guest (1 eps)
Tom Green
Self - Guest (1 eps)
Adrian Pasdar
Self - Guest (1 eps)
Marla Sokoloff
Self - Guest (1 eps)
Phyllis Diller
Self - Guest (1 eps)
Carson Kressley
Self - Guest (1 eps)
Beau Bridges
Self - Guest (1 eps)
Amy Sedaris
Self - Guest (1 eps)
Wendie Malick
Self - Guest (1 eps)
Janice Dickinson
Self - Guest (1 eps)
John Stamos
Self - Guest (1 eps)
Brenda Strong
Self - Guest (1 eps)
Cris Judd
Self - Guest (1 eps)
Tyrese Gibson
Self - Guest (1 eps)
David James Elliott
Self - Guest (1 eps)
Michael Ealy
Self - Guest (1 eps)
Lisa Edelstein
Self - Guest (1 eps)
Jeffrey Tambor
Self - Guest (1 eps)
Tisha Campbell
Self - Guest (1 eps)
Mark Montano
Self - Guest (1 eps)
Shawn Wayans
Self - Guest (1 eps)
Marlon Wayans
Self - Guest (1 eps)
Oded Fehr
Self - Guest (1 eps)
Rhea Perlman
Self - Guest (1 eps)
Sarah Rush
Self - Guest (1 eps)
Howie Mandel
Self - Guest (1 eps)
Jennie Garth
Self - Guest (1 eps)
Ahmet Zappa
Self - Guest (1 eps)
Lisa Williams
Self - Guest (1 eps)
Jane Seymour
Self - Guest (1 eps)
David Conrad
Self - Guest (1 eps)
Ken Davitian
Self - Guest (1 eps)
Joshua Radin
Self - Musical Guest (1 eps)
Alfre Woodard
Self - Guest (1 eps)
Milo Ventimiglia
Self - Guest (1 eps)
Fantasia Barrino
Self - Musical Guest (1 eps)
Billy Ray Cyrus
Self - Guest (1 eps)
Richard Simmons
Self - Guest (1 eps)
Brian McKnight
Self - Musical Guest (1 eps)
José Feliciano
Self - Musical Guest (1 eps)
Emily Procter
Self - Guest (1 eps)
Tichina Arnold
Self - Guest (1 eps)
Natalie Cole
Self - Guest (1 eps)
Craig Bierko
Self - Guest (1 eps)
Dave Annable
Self - Guest (1 eps)
Blaine Zuckerman
Self - Guest (1 eps)
Allison Janney
Self - Guest (1 eps)
Davy Jones
Self - Guest (1 eps)
Jerry Springer
Self - Guest (1 eps)
Christine Taylor
Self - Guest (1 eps)
Selma Blair
Self - Guest (1 eps)
Chandra Wilson
Self - Guest (1 eps)
Jesse Bradford
Self - Guest (1 eps)
