The Big Bang Theory
The Big Bang Theory S9 E17 - The Celebration Experimentation
7.9
After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
| Creator | Chuck Lorre |
|---|---|
| Actor | Johnny Galecki, Jim Parsons, Kaley Cuoco |
| Country | United States of America |
| Production | Chuck Lorre Productions |