Penny

Kaley Cuoco

Leonard Hofstadter

Johnny Galecki

Sheldon Cooper

Jim Parsons

Howard Wolowitz

Simon Helberg

Rajesh Koothrappali

Kunal Nayyar

Bernadette Rostenkowski

Melissa Rauch

Amy Farrah Fowler

Mayim Bialik

Mike Rostenkowski

Casey Sander

Dry Cleaner

William Stanford Davis

Stuart Bloom

Kevin Sussman

Lucy

Kate Micucci

Janine Davis

Regina King

Wil Wheaton

Wil Wheaton

Arthur Jeffries

Bob Newhart

Santa

Dakin Matthews

Debbie Wolowitz (voice)

Carol Ann Susi

Bert Kibbler

Brian Posehn

Buzz Aldrin

Buzz Aldrin

Lana

Angela Sargeant

Dimitri

Pasha Lychnikoff

Alex Jensen

Margo Harshman

LeVar Burton

LeVar Burton

Barry Kripke

John Ross Bowie

Waiter

David Trice

Stephen Hawking

Stephen Hawking

Mrs. Rostenkowski

Meagen Fay

Paramedic

Ian Reed Kesler

Cole

Ryan Cartwright

Mike Massimino

Mike Massimino

Paramedic

Troy Winbush

Girl 1

Piper Mackenzie Harris

Dale

Josh Brener

Officer Reynolds

Matt Battaglia

Claire

Janelle Marra

Tom

Riccardo LeBron

Steven V. Silver

Car Thief 1

Craig Gellis

Girl 2

Diamond White

Mark Cendrowski

Lillian

Jan Hoag

Car Thief 2

Frank Alvarez

Gretchen

Briana Cuoco

Justin

Dawson Fletcher

Beverly Hofstadter

Christine Baranski

Dr. Schneider

Ken Lerner

Guy

Rick Gifford

President Siebert

Joshua Malina

Chauffeur

John Mendoza

Chuck Lorre

Zack Johnson

Brian Thomas Smith

Kristy Cecil

Halley Wolowitz (voice)

Pamela Adlon

Bill Prady

Anu

Rati Gupta

Denise

Lauren Lapkus

Peter Chakos

Steven Molaro

Althea

Vernee Watson-Johnson

Richard Williams

Dean Norris

Maria Ferrari

Michael J. Massimino

Michael J. Massimino

David Goetsch

Claire

Alessandra Torresani

Eric Gablehauser

Mark Harelik

Announcer (voice) / Man / Man V.O. (voice)

Ed Lieberman

Wyatt Teller

Keith Carradine

Faye Oshima Belyeu

Mary T. Quigley

Aarti Mann

Iris Bahr

Sara Gilbert

Director

Joel Murray

Director

Mark Cendrowski

Director

Ted Wass

Director

Anthony Rich

Director

James Burrows