The Big Bang Theory: Season 9 Episode 22: The Fermentation Bifurcation
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Mayim Bialik, Kunal Nayyar, Melissa Rauch
Length: 19 minutes
On Air Date: 28 Apr 2016
The Big Bang Theory: S09E22 Description: Sheldon and Bernadette spend the evening together while the rest of the gang go to a wine tasting party, but things get uncomfortable for Raj when Penny’s ex-boyfriend Zack shows up and takes an interest in Claire.