Sheldon considers making a big change on the season finale of The Big Bang Theory. "That Status Quo Combustion" is the 24th episode of the show's seventh season.
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Penny reevaluates her life after a very bad day on The Big Bang Theory. "The Gorilla Dissolution" is the 23rd episode of the show's seventh season.
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Professor Proton is as Obi-Wan with a light saber visits Sheldon.
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Bernadette and Amy bring the Death Star Cake to the Star Wars Day celebration.
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After having an emotional dream, Sheldon hugs Leonard to show he cares.
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Amy and Bernadette make a Death Star Cake to celebrate Star Wars Day.
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Leonard and Penny attend a funeral and pay respects on May 4th.
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Sheldon, Howard and Raj start celebrating Star Wars Day on May 4th.
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TBBT Quotes

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon