The Celebration Experimentation
After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
Release : February 25, 2016
Runtime Epiosde : 19 minutes
Rating : 7.30
Credits
Johnny Galecki ( Johnny Galecki )
Leonard Hofstadter
Jim Parsons ( Jim Parsons )
Sheldon Cooper
Kaley Cuoco ( Kaley Cuoco )
Penny
Simon Helberg ( Simon Helberg )
Howard Wolowitz
Kunal Nayyar ( Kunal Nayyar )
Rajesh Koothrappali
Melissa Rauch ( Melissa Rauch )
Bernadette Rostenkowski
Mayim Bialik ( Mayim Bialik )
Amy Farrah Fowler