The Big Bang Theory 2007

- Season 9 Episode 6 - The Helium Insufficiency

Synopsis: The Helium Insufficiency: In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.
Aired: Oct 26, 2015