Steve Whitmire

Kermit the Frog / Rizzo the Rat / Beaker / Elvises (voice)

Acting

Dave Goelz

The Great Gonzo / Dr. Bunsen Honeydew / Waldorf / Zoot (voice)

Acting

Bill Barretta

Pepe the King Prawn / Bobo the Bear / Johnny Fiama / Swedish Chef / Lew Zealand / Howard Tubman / Rowlf the Dog / Elvises (voice)

Acting

Eric Jacobson

Miss Piggy / Fozzie Bear / Animal / Yoda / Elvises (voice)

Acting

David Arquette

Daniel

Acting

Joan Cusack

Rachel Bitterman

Acting

Matthew Lillard

Luc Fromage

Acting

William H. Macy

Glenn

Acting

Whoopi Goldberg

Daniel's 'Boss'

Acting

Mel Brooks

Joe Snow (voice)

Acting

Carson Daly

Self

Acting

Molly Shannon

Self

Acting

Chantal Strand

Nancy Nut-What

Acting

Dave 'Squatch' Ward

Sally Ann Santa Claus

Acting

Brian Henson

Scooter / Janice / Sal Minella (voice)

Acting

Kevin Clash

Sam Eagle (voice)

Acting

John Henson

Sweetums (voice)

Acting

Jerry Nelson

Robin the Frog / Statler / Announcer / Pops / Floyd Pepper

Acting

Allan Trautman

Eugene the Tuba Player (voice)

Acting

Alice Dinnean

Acting

Geoff Redknap

Acting

Denise Cheshire

Acting

Drew Massey

Muppet Performer

Acting

Adam Behr

Acting

Gord Robertson

Acting

Zach Braff

Dr. John "J.D." Dorian

Acting

Sarah Chalke

Dr. Elliot Reid

Acting

John C. McGinley

Dr. Perry Cox

Acting

Judy Reyes

Nurse Carla Espinosa

Acting

Neil Flynn

Janitor

Acting

Snoop Dogg

Acting

Bill Lawrence

Writing

Kelly Ripa

Acting

Joe Rogan

Acting

Robert Smigel

Triumph, the Insult Comic Dog (voice)

Acting

John E. Kennedy

Dr. Teeth (voice)

Acting

Colin Foo

Security Guard

Acting

Marci Dacus

Fear Factor Contestant (uncredited)

Acting