Stars (in credits order)
Dana Carvey
Self - Expert in Residence
Freddie Prinze Jr.
Self - Host
Steve Carell
Self - Guest Expert
Yvette Nicole Brown
Jon Lovitz
Kate Flannery
Tom Arnold
Kevin Nealon
Melissa Villaseñor
Self - Contestant
Jay Leno
Self - Surprise Appearance
Johnno Wilson
Brock Baker
Craig Gass
Justin Rupple
Meghan Deanna Smith
Impressionist
Rachel Butera
Carlie Craig
Curtis Kingsley
Jason Kaye
Frank Garcia-Hejl
Angela Hoover
Jevin Smith
Peter Marr
Lauren O'Brien
Amy Phillips
Rusty Sarhan
Jason Scoop
Ryan Goldsher
Julian Fernandez
Barbara Heller
Self (uncredited)