Season 8, Episode 9 - The Septum Deviation
Aired November 13, 2014
Sheldon is troubled when Leonard decides to get minor surgery performed on his nose. Sheldon tries to convince Leonard not to get the surgery in case he doesn't make it. Meanwhile, Raj is distraught when he finds out his parents have divorced just before their 40th wedding anniversary, causing Howard and Bernadette to pay more care to their own relationship.