Source: http://the-big-bang-theory.com/
CBS has announced the details of the ninth episode of the season, The Vengeance Formulation, in which Battlestar Galactica’s Katee Sackhoff and National Public Radio’s Ira Flatow will appear as themselves.
“The Vengeance Formulation” – After he’s humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette, on THE BIG BANG THEORY, Monday, Nov. 23 (9:30-10:00 PM, ET/PT) on the CBS Television Network. “Battlestar Galactica” star Katee Sackhoff appears as herself, offering Wolowitz some relationship advice.
