The Big Bang Theory

Series 4 - 6. The Irish Pub Formulation

The Irish Pub Formulation

About this programme

6/24. Raj's sister Priya visits the gang, causing tension when Leonard tries to cover up the fling he once had with her. After discovering his friend's secret, Sheldon struggles to keep quiet, leading the guys to reveal information they have all been keeping from one another.

Cast and crew


Leonard Hofstadter
Johnny Galecki
Sheldon Cooper
Jim Parsons
Kaley Cuoco-Sweeting
Howard Wolowitz
Simon Helberg
Raj Koothrappali
Kunal Nayyar
Priya Koothrappali
Aarti Mann