The Big Bang Theory/The Conjugal Configuration
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The Conjugal Configuration is the first episode of the twelfth season of The Big Bang Theory, and the two hundred fifty-sixth episode overall.
Starring: Johnny Galecki (Dr. Leonard Hofstadter), Jim Parsons (Dr. Sheldon Cooper), Kaley Cuoco (Penny Hofstadter), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Dr. Rajesh "Raj" Koothrappali), Mayim Bialik (Dr. Amy Farrah Fowler), Melissa Rauch (Dr. Bernadette Rostenkowski-Wolowitz)
Special Guest Star: Kathy Bates (Mrs. Fowler)
Co-Starring: Andy Taylor Kim (Tour Guide)