Jason Segel
Gary
Acting
Amy Adams
Mary
Acting
Chris Cooper
Tex Richman
Acting
Rashida Jones
CDE Executive
Acting
Steve Whitmire
Kermit / Beaker / Statler / Rizzo / Link / Newsman (voice)
Acting
Peter Linz
Walter (voice)
Acting
Eric Jacobson
Miss Piggy / Fozzie / Animal / Sam Eagle / Marvin Suggs (voice)
Acting
Dave Goelz
Gonzo / Honeydew / Zoot / Beauregard / Waldorf (voice)
Acting
Bill Barretta
Swedish Chef / Rowlf / Teeth / Pepe / Bobo / Muppet Gary (voice)
Acting
David Rudman
Scooter / Janice / Miss Poogy / Wayne (voice)
Acting
Matt Vogel
Pepper / Camilla / Sweetums / Robot / Deadly / Harry (voice)
Acting
Alan Arkin
Tour Guide
Acting
Bill Cobbs
Grandfather
Acting
Zach Galifianakis
Hobo Joe
Acting
Ken Jeong
Punch Teacher Host
Acting
Jim Parsons
Human Walter
Acting
Eddie Pepitone
Postman
Acting
Kristen Schaal
Moderator
Acting
Sarah Silverman
Greeter
Acting
Eddie 'Piolin' Sotelo
TV Executive
Acting
Raymond Ma
Elderly Asian Man
Acting
Shu Lan Tuan
Elderly Asian Woman
Acting
Donald Glover
Junior CDE Executive
Acting
Dahlia Waingort
TV Executive
Acting
Jonathan Palmer
Reporter One
Acting
Don Yanan
Reporter Two
Acting
Michael Albala
TV Executive
Acting
Julia Marie Franzese
Punch Teacher Kid
Acting
Gunnar Smith
Gary Age 6
Acting
Connor Gallagher
Gary Age 9
Acting
Justin Marco
Gary Age 13
Acting
Cameron Kasal
Laughing Kid
Acting
Justin Tinucci
Laughing Kid
Acting
Alex Long
Laughing Kid
Acting
Aria Noelle Curzon
Waitress
Acting
Emily Blunt
Miss Piggy's Receptionist
Acting
James Carville
James Carville
Acting
Leslie Feist
Smalltown Resident
Acting
Whoopi Goldberg
Whoopi Goldberg
Acting
Selena Gomez
Selena Gomez
Acting
Dave Grohl
Animool
Acting
Neil Patrick Harris
Neil Patrick Harris
Acting
Judd Hirsch
Judd Hirsch
Acting
John Krasinski
John Krasinski
Acting
Rico Rodriguez
Rico Rodriguez
Acting
Mickey Rooney
Smalltown Resident
Acting
Tyler Bunch
Fozzie Moopet / Thog / Additional Muppet Performer (voice)
Acting
Bruce Lanoil
Additional Muppet Performer (voice)
Acting
Michelan Sisti
Additional Muppet Performer (voice)
Acting
Paul McGinnis
Additional Muppet Performer (voice)
Acting
Greg Ballora
Additional Muppet Performer (voice)
Acting
David Alan Barclay
Additional Muppet Performer (voice)
Acting
Tim Blaney
Additional Muppet Performer (voice)
Acting
Kevin Carlson
Additional Muppet Performer (voice)
Acting
Leslie Carrara-Rudolph
Additional Muppet Performer (voice)
Acting
Kristin Charney
Additional Muppet Performer (voice)
Acting
Nathan Danforth
Additional Muppet Performer (voice)
Acting
Alice Dinnean
Afghan Hound / Wanda / Additional Muppet Performer (voice)
Acting
Julia Gunn
Additional Muppet Performer (voice)
Production
BJ Guyer
Additional Muppet Performer (voice)
Acting
Tanya Haden
Additional Muppet Performer (voice)
Acting
Patrick Johnson
Additional Muppet Performer (voice)
Acting
Sean W. Johnson
Additional Muppet Performer (voice)
Acting
Len Levitt
Additional Muppet Performer (voice)
Acting
James Murray
Additional Muppet Performer (voice)
Acting
Michael Oosterom
Additional Muppet Performer (voice)
Acting
Karen Prell
Additional Muppet Performer (voice)
Acting
Mike Quinn
Additional Muppet Performer (voice)
Acting
David Skelly
Additional Muppet Performer (voice)
Art
Andy Stone
Additional Muppet Performer (voice)
Acting
Art Vega
Additional Muppet Performer (voice)
Acting
Alex Villa
Additional Muppet Performer (voice)
Acting
Chase Woolner
Additional Muppet Performer (voice)
Acting
Jack Black
Jack Black (uncredited)
Acting
Mike Carlucci
Scout Troop Leader (uncredited)
Acting
Reese Hartwig
Punch Teacher Contestant (uncredited)
Acting
Jerry Nelson
Telethon Announcer (voice) (uncredited)
Acting