The Big Bang Theory

Johnny Galecki

Leonard Hofstadter

Jim Parsons

Sheldon Cooper

Kaley Cuoco

Penny

Simon Helberg

Howard Wolowitz

Kunal Nayyar

Rajesh Koothrappali

Melissa Rauch

Bernadette Rostenkowski

Mayim Bialik

Amy Farrah Fowler

Kevin Sussman

Stuart Bloom

Carol Ann Susi

Debbie Wolowitz (voice)

John Ross Bowie

Barry Kripke

Laura Spencer

Emily Sweeney

Wil Wheaton

Wil Wheaton

Brian George

V.M. Koothrappali

Christine Baranski

Beverly Hofstadter

Brian Posehn

Bert Kibbler

Laurie Metcalf

Mary Cooper

Joshua Malina

President Siebert

Aarti Mann

Priya Koothrappali

Brian Thomas Smith

Zack Johnson

Pamela Adlon

Halley Wolowitz (voice)

Sara Gilbert

Leslie Winkle

Rati Gupta

Anu

Kate Micucci

Lucy

Lauren Lapkus

Denise

Stephen Hawking

Stephen Hawking

Dean Norris

Richard Williams

Casey Sander

Mike Rostenkowski

Michael J. Massimino

Michael J. Massimino

Regina King

Janine Davis

Bob Newhart

Arthur Jeffries

Alessandra Torresani

Claire

Vernee Watson

Althea

Mark Harelik

Eric Gablehauser

Ed Lieberman

Announcer (voice)

Keith Carradine

Wyatt Teller

Pasha D. Lychnikoff

Dimitri

Margo Harshman

Alex Jensen

Robert Clotworthy

Train Conductor (voice)

Brian Patrick Wade

Kurt

LeVar Burton

LeVar Burton

Riki Lindhome

Ramona Nowitzki

Kimberly Brooks

Computer (voice)

Swati Kapila

Ruchi

Stephen Merchant

Dave Gibbs

Marcus Folmar

Security Guard

Sara Rue

Stephanie Barnett

Ira Flatow

Ira Flatow

Ian Scott Rudolph

Captain Sweatpants (uncredited)

Jerry O'Connell

Georgie Cooper

Kathy Bates

Mrs. Fowler