Stars (in credits order)
Megan Mullally
Self - Hostess
Bret Simmons
Self - Musical Director
Carrie Clifford
Various
David McManus
Self
Tim Bagley
Self - Guest
Neil Patrick Harris
Steven Weber
Mario Lopez
Rusty Schwimmer
Dana Powell
Tom Bergeron
Merv Griffin
Clay Aiken
Daryl Hall
John Oates
Eric A. Stromer
Ruben Studdard
Kimberley Locke
Danny Seo
Sarah Scherger
Emily Albrecht
Karla Braun
Kyle Krichbaum
Brit Tranckino
Michael Clarke Duncan
Connie Britton
The Miller Brothers
Themselves - Musical Guest
Jamie Lee Curtis
Melora Hardin
Jensen Ackles
Julianne Nicholson
Linda Cardellini
Melissa Peterman
Jennifer Love Hewitt
Molly Ringwald
Will Ferrell
Cobie Smulders
Patrick Wilson
Laura Linney
Cheryl Hines
Virginia Madsen
Sharon Stone
Eva Mendes
Patricia Arquette
Amy Smart
Milo Ventimiglia
Anne Heche
Elizabeth Perkins
Mark Harmon
Parminder Nagra
Jane Seymour
Jordana Brewster
Jonny Lee Miller
Alyson Hannigan
Lauren Holly
David Boreanaz
Taylor Swift
Lisa Edelstein
Julia Louis-Dreyfus
Josh Duhamel
Rosanna Arquette
Jason Segel
Matthew Broderick
Audra McDonald
Sela Ward
Alison Lohman
Rainn Wilson
Bradley Whitford
Carrie Fisher
Chris Noth
Peter Krause
Cloris Leachman
Josh Radnor
Dax Shepard
Oded Fehr
Tim Daly
Daniel Dae Kim
Rob Morrow
Lisa Kudrow
Tyrese Gibson
Constance Zimmer
Aly Michalka
Amy Sedaris
Patricia Heaton
Paz Vega
Goran Visnjic
Kristin Chenoweth
Scott Foley
Jenny McCarthy-Wahlberg
Reba McEntire
Brenda Strong
Carol Burnett
Nadine Velazquez
Melina Kanakaredes
Peter Gallagher
Alfre Woodard
Marlon Wayans
Rhea Perlman
Felicity Huffman
Kim Raver
Jane Kaczmarek
John Stamos
Debra Messing
David Hyde Pierce
Perry Mattfeld
American Girl
Jeffrey Tambor
Jesse Bradford
Niecy Nash
Marcia Cross
Adrian Pasdar
Eric Mabius
Jennie Garth
Omar Epps
Adam Rodriguez
Michael Ealy
Camryn Manheim
Beau Bridges
Matthew Davis
Jamie Kennedy
Angela Kinsey
Tyler James Williams
Judy Reyes
Marla Sokoloff
Lisa Rinna
Sean Hayes
Molly Sims
Harry Hamlin
David James Elliott
JoJo
Eddie Cibrian
James Denton
Tisha Campbell
Donald Faison
AJ Michalka
Self - Performer
Isaiah Washington
Enrique Murciano
Chandra Wilson
Wayne Brady
Tom Arnold
David Conrad
Brian Baumgartner
Meat Loaf
Andrea Bowen
Maite Perroni
Jennifer Finnigan
Shawn Pyfrom
Howie Mandel
Josh Cooke
Josh Henderson
Noah Gray-Cabey
Bob Saget
Tom Green
Jesse McCartney
James Lesure
Wanda Sykes
Shawn Wayans
Masi Oka
Sherri Shepherd
Andy Dick
Ricardo Chavira
Kevin Nealon
Phyllis Diller
Tracy Morgan
Antonio Sabato Jr.
George Lopez
Alfonso Herrera
Carlos Bernard
Billy Ray Cyrus
Aaron Carter
Hayley Holmes
Ken Davitian
Fantasia Barrino
Shelley Morrison
Nick Carter
Duane Martin
Jerry Springer
Catherine Lloyd Burns
Sarah Rush
Tim Gunn
Barry Manilow
Ahmet Zappa
Janice Dickinson
Cris Judd
Carson Kressley
Criss Angel
Cesar Millan
Richard Simmons
Kevin Federline
Presley Cash
Dulce María
Santino Rice
Anahí
Clinton Kelly
José Feliciano
Christopher Von Uckermann
Rupert Boneham
Sue Johanson
Christian Chávez
Brian McKnight
Joshua Bell
Drew Lachey
Mitch Albom
Taylor Hicks
Trista Sutter
MaShae Alderman
Jon Hartmere
Kyla Dang
Kate Quigley
Guest Baton Twirler
Ryan Sutter
Jeffrey Sebelia
Benji Schwimmer
Lisa Williams
Marc Cleary
Kerri-Anne Lavin
Dancer
Mark Leyner
Mario Vazquez
Bianca Ryan
Tyler Weaver Jr.
Guest Performer
Heidi Groskreutz-Burns
Raymond J. Brune
Farris Patton
April Washko
Kellie Ramdhanie
Model
Taylor Ware
Michael Carson
Keisha Ramdhanie
Billy Goldberg
The Ten Tenors
Themselves
Nathan Burton
Slade Abisror
Steve Holy
Tysonia Sichinga
Jill Conner Browne
Emily Procter
Dave Annable
Craig Bierko
Tichina Arnold
Natalie Cole
Goo Goo Dolls
Wendi McLendon-Covey