“The Toast Derivation” — When the gang starts hanging out at Raj’s, Sheldon decides to get a new group of friends. Meanwhile, Bernadette (Melissa Rauch, left) and Amy Farrah Fowler (Mayim Bialik, right) take Penny (Kaley Cuoco, center) out for a girls’ night, on THE BIG BANG THEORY, Thursday, Feb. 24 (8:00-8:31 PM, ET/PT) on the CBS Television Network.
Photo: Cliff Lipson/CBS
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