"The Boyfriend Complexity" — Penny asks Leonard to lie to her father, while Howard (Simon Helberg, left), Raj (Kunal Nayyar, center) and Bernadette (Melissa Rauch, right) pull an all-nighter at a telescope, on THE BIG BANG THEORY, Thursday, Nov. 18 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
Photo: Sonja Flemming/CBS
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