The Proton Regeneration

Cast

• 

  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

• 

  Wil Wheaton

  Wil Wheaton

• 

  Pamela Adlon

  Halley Wolowitz (voice)

• 

  Bob Newhart

  Arthur Jeffries

• 

  Cat Hammons

  Nurse

• Joey Rich

  Man