Leonard and Raj run into a restaurant customer who looks just like Nathan Fillion. "The Comic Book Store Regeneration" is the 15th episode of the show's eighth season.
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Kunal Nayyar plays Raj Koothrappali on The Big Bang Theory
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Bernadette and Amy bring the Death Star Cake to the Star Wars Day celebration.
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Sheldon, Howard and Raj start celebrating Star Wars Day on May 4th.
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The gang introduces Penny to Star Wars Day on May 4th.
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Howard arrive for his double date with his wife, Raj and Emily.
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Bernadette and Howard go on a double date with Raj and Emily.
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Barry Kripke shows up to talk to the guys during lunch.
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Raj has dinner with a date named Emily. Will he pick her?
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Raj has coffee with a new woman, Emily. He looks quite smitten.
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Raj takes Penny's hand while Leonard sits next to her watching it unfold.
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The gang gathers around Stuart's body during the Murder Mystery party.
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TBBT Quotes

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.

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