Episode Titles: Deviation
You are viewing a list of 3 The Big Bang Theory episodes featuring "Deviation" in their title.
The Gothowitz Deviation
Season 3, Episode 3 - Aired October 5, 2009
Howard and Raj try to meet women at a Goth nightclub. Meanwhile, Leonard is disturbed when Sheldon attempts to retrain Penny with chocolate-based positive reinforcement to eliminate what he considers her annoying traits.
The Hot Troll Deviation
Season 4, Episode 4 - Aired October 14, 2010
Howard is embarrassed when the creepy reason behind his break-up with Bernadette is revealed. Meanwhile, a spat between Sheldon and Raj gets ugly as they engage in office warfare.
The Septum Deviation
Season 8, Episode 9 - 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.
The Consummation Deviation
Season 12, Episode 8 - Aired November 8, 2018
After Sheldon realizes he should have a better relationship with Amy's parents, he sets out to bond with Mr. Fowler. When Howard enchants Larry with his magic tricks, Sheldon turns to Mrs. Fowler instead.
Meanwhile, Raj and Anu decide to find out whether they're compatible in the bedroom before they marry.