Sheldon seeks payback when Arthur "Professor Proton" Jeffries asks Leonard for help on a project instead of him. Raj gets upset at Howard for crashing his night with the girls.
Episode rating
Cast of episode
67
24
4
4
1
- Sheldon Cooper
- Raj Koothrappali
- Leonard Hofstadter
- Penny
- Howard Wolowitz
- Amy Farrah Fowler
- Bernadette Rostenkowski
- Arthur Jeffries
- Bill Nye