Jack Black as Jan Lewan

Jenny Slate as Marla Lewan

Jason Schwartzman as Mickey Pizzazz

Jacki Weaver as Barb

JB Smoove as Ron Edwards

Robert Capron as David Lewan

Willie Garson as Lonny

Vanessa Bayer as Bitsy Bear

Robert Macaux as Christopher

Mary Klug as Anita Krzyewski

Wallace Wolodarsky as Vince

Lew Schneider as Lou Laroue

Phyllis Kay as Marilyn

Richard Donelly as Stan Moetek

Kati Salowsky as Connie Klopski

Jordan Lloyd as Debra Johnson

Rachel Annette Helson as Beauty Pageant Judge

Anthony Estrella as Presenter

Melody Vasquez as Agent Ramirez

Randy Tow as Mr. Lee

Marilyn Busch as Sheila

Russell Gibson as Gorski

China Forbes as Grammy Reporter

Jim Boyd as Reporter

Portland Helmich as Anchorwoman

Bruce-Robert Serafin as Customer

Wendy Overly as Conga Woman

Jessica Baade as Trish

Keith Mascoll as Applesauce

Owen Burke as Prison Guard

Juani Feliz as PR Woman

Peter Ackerman as Priest

Irvin Wallace as Ruined Old Man

Michael Jibrin as Tyrone

Mickey Gilmore as Prison Guard

Leah Procito as Nurse

Alex Ziwak as Prison Inmate

Arthur Hiou as Security for Pope

Shawn Contois as Bus Driver

Brina as Dance Hall Patron

Brandon Scales as Prison Inmate

Anastasia Tsikhanava as Rock Star

Marybeth Paul as Pageant Contestant

Lara Pezza as Denny

Bella Moore as Polka Kid

Robert Marsella as Waiter / Performance Attendee

Angel Connell as Performance Attendee

Rob Lévesque as Jan Lewan Group

Lance Norris as Pizzeria Customer

Richard Pacheco as Performance Attendee / Polka Dancer

Leonel Severino as Celebrity on the Red Carpet

John Franchi as Performance Attendee

Kobi Polisky as Polka Child

Ted Sterner as Country Music Producer

Jed Griswold as Polka Dancer

Jeffery Kincannon as Performance Attendee

Suzanne Gillies as Security Agent

Harold Rudolph as Polka Dancer

Michele Mortensen as Polka Dancer

Benjamin James Chaplin as Teen Party Goer

Wendy Hartman as Wife Prison Visitor

Lino Tanaka as Doctor

Ron G. Young as Performance Attendee

Rich Rothbell as Uncle Rich / Polka Pro

Glenn W. Kane as Pope's Bodyguard

Tony Moreira as Prison Visitor

Kayla Kohla as Teenage Girl

Eric Berghman as Background Dancer

Alexa Hartman as Daughter Prison Visitor

Tony Jones as Basketball Playing Prisoner

Mary Jane Brennan Sangiolo as Dance Hall Patron

Kevin Paul Healey as Ed

Steve Provizer as Polka Band Musician

Luke Nelson as Pope Visitor

Pasquale Dalessio as Bus Tour Group

Frank Cacciola as Polka Dancer (uncredited)

Joe Cali as Tourist (uncredited)

Charlie Flannery as Performance Attendee (uncredited)

Dan Marshall as Polka Dancer (uncredited)

Americo Presciutti as Pope's Security (uncredited)

Susan Halsey Singer as Party Goer (uncredited)