קבועי עונה 5

1. 

   Johnny Galecki

   Leonard Hofstadter

2. 

   Jim Parsons

   Sheldon Cooper

3. 

   Kaley Cuoco

   Penny

4. 

   Simon Helberg

   Howard Wolowitz

5. 

   Kunal Nayyar

   Rajesh Koothrappali

כוכבי אורח 4

1. 

   Brooke D'Orsay

   Christy Vanderbel

2. 

   James Hong

   Chen

3. 

   Carol Ann Susi

   Debbie Wolowitz (voice)

4. 

   Kimberly Brooks

   Automated Cell Phone Voice (voice)

סגל 7