The Hot Troll Deviation

The Hot Troll Deviation is the fourth episode of the fourth season of the Big Bang Theory.

Plot Summary
Howard is embarrassed when a secret of his is revealed and Sheldon and Raj battle at work. Katee Sackhoff and George Takei guest star as Howard's love gurus.

Expanded Plot
When the guys run into Howard's ex at the Cheesecake Factory, he ends up confronting his lingering feelings for her. He seeks help from Penny, who agrees on the condition that Howard reveal the reason behind his breakup. He confesses that Bernadette caught him engaging in cybersex with a fellow World of Warcraft player, later revealed to be a male colleague at the university. Howard and Bernadette discuss their relationship at the restaurant and make amends, deciding to give it another try. They go out on a date and are last seen making out in her car.

Meanwhile, Sheldon and Raj are arguing about whether or not Raj can have a desk. Sheldon cites budgetary reasons and Raj offers to buy his own desk, provided he can put it in Sheldon's office. Sheldon arrives at the office later to find Raj sitting behind a large and ornate desk. Sheldon demands it be removed and Raj refuses, leading to an escalating battle of annoyances. Eventually, Sheldon tries to "smoke" Raj out with noxious hydrogen sulfide gas. Raj decides to counter by lighting aromatherapy candles, igniting the gas. Raj and his (recently acquired) parakeet vacate the office in a cloud of smoke with Raj stating "This is not over."

Guest Cast

 * Katee Sackhoff as Howard's love guru
 * George Takei as Howard's love guru

Trivia

 * Title refers to Howard's online affair with Glicinda the Troll in World of Warcraft.
 * The affair is said to take place under the bridge of souls. The bridge of souls is a part of the Auchenai Crypts instance in Outland and you cannot get under it in the current state of the game.