The Sales Call Sublimation
'The Sales Call Sublimation' - Season 9, Episode 12
Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can't believe what they are feeling after Stuart moves out.
Air Date: January 7, 2016.