"The Cooper/Kripke Inversion" is the fourteenth episode of the sixth season of the American sitcom The Big Bang Theory. This episode first aired on Thursday, January 31, 2013.[1] Sheldon is forced to work with his rival Barry Kripke and later ponders his feelings for Amy. Raj and Howard spend a lot of money on miniature action figures that resemble them. Sheldon is busy at his whiteboard while Leonard tells him that his dinner is getting cold. Sheldon declines by telling his friends that he is,