The boys look to make something new and cool but end up procrastinating on The Big Bang Theory. "The Focus Attentuation" is the fifth episode of the show's eighth season.
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Raj gets into trouble when his girlfriend gives Penny the cold shoulder on The Big Bang Theory. "The Hook-Up Reverberation" is the fourth episode of the show's eighth season.
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Wolowitz practices before pitching in the big game on The Big Bang Theory. "The First Pitch Insufficiency" is the third episode of the show's eighth season.
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Everyone is shocked when Howard signs up to take Sheldon's class on The Big Bang Theory. "The Junior Professor Solution" is the second episode of the show's eighth season.
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A little help here? Sheldon is in Arizona on The Big Bang Theory Season 8 premiere.
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Mayim Bialik plays Amy Farrah Fowler on The Big Bang Theory
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Melissa Rauch plays Bernadette Rostenkowski on The Big Bang Theory
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Kunal Nayyar plays Raj Koothrappali on The Big Bang Theory
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TBBT Quotes

I was expecting applause but I suppose stunned silence is equally appropriate.

Sheldon

Sheldon: Nothing more fun than a paradigm shifting evening of science.
Penny: (to Leonard) And you thought it was soaping me up in the shower.