The Big Bang Theory: Episode 10×12 “The Holiday Summation” Promo

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The Big Bang Theory episode 10×12 titled “The Holiday Summation” airs this Thursday on CBS. Check out the promo for this week’s all-new episode below.

Episode synopsis: 

After the holidays, Sheldon and Amy visit Penny and Leonard to talk about their not-so-very merry Christmas trip to Texas to visit Sheldon’s mother, Mary, played by guest star Laurie Metcalf.

Also, Howard and Bernadette catch the gang up on their first few cry-filled days as parents on the next all-new episode of The Big Bang Theory entitled “The Holiday Summation,” which airs Thursday, Jan. 5 at 8/7c on CBS and CBS All Access.