The guys battle over how to construct a message for NASA on The Big Bang Theory. "The Communication Deterioration" is the 21st episode of the show's eighth season.
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Sheldon faces a relationship crossroad with Amy when they build a blanket fort on The Big Bang Theory. "The Fortification Implementation" is the 20th episode of the show's eighth season.
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Here is a look at Sheldon in an unusual outfit. It's a photo from The Big Bang Theory episode "The Skywalker Incursion."
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Hey, what you working on? Sheldon sneaks a peek in this scene from The Big Bang Theory.
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Amy finds out that Sheldon applied for a one-way trip to Mars on The Big Bang Therapy. "The Colonization Application" is the 17th episode of the show's eighth season.
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Penny and Sheldon design an experiment made to get the participants to fall in love on The Big Bang Theory.
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Sheldon and Leonard go dress shopping with Penny and Amy on The Big Bang Theory. "The Space Probe Disintegration" is the 12th episode of the show's eighth season.
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Sheldon says goodby to "Fun with Flags" on The Big Bang Theory. "The Champagne Reflection" is the tenth episode of the show's eighth season.
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Leonard has minor surgery on his nose on The Big Bang Theory. "The Septum Deviation" is the ninth episode of the show's eighth season.
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Amy and Bernadette plan a rooftop prom on The Big Bang Theory. "The Prom Equivalency" is the eighth 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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Jim Parson plays Sheldon Cooper on The Big Bang Theory
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TBBT Quotes

Leonard: You can't put that on Snapchat.
Raj: Fine, I'll put it on Facebook like a caveman.

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.