Can Leonard and Penny hang out alone? That's their goal in this Big Bang Theory scene.
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Laurie Metcalf is seen here as Sheldon's mom. She is rather popular within the group.
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Wil Wheaton is back! And he's hosting a party at his house here.
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The boys are concerned about Raj here, but all we be okay. He meets a girl he can actually talk to on "The Wiggly Finger Catalyst."
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You're looking at a photo from "The Pulled Groin Extrapolation." Sheldon and Leonard have a lot to discuss.
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Leonard confronts Penny in this scene from the season five premiere of The Big Bang Theory. She sure finds something funny!
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The gang is all here. And we mean everyone! Check out this scene from the fifth season premiere of The Big Bang Theory.
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This is awkward for everyone. Raj and Penny stand in front of the boys on the fifth season premiere.
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Don't look for Leonard and Priya to slow down on season five. Not even 7,500 miles can end their relationship!
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The men have a mission on the episode "The Zarnecki Incursion." They must find the person who hacked into Sheldon's online game account.
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Can Leonard be friends with Penny while dating Priya? It might be a challenge.
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You're looking at a photo from "The Cohabitation Formulation." Raj's sister returns during the episode.
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TBBT Quotes

Penny: Leonard, sweetheart, you twisted your ankle playing Scrabble.
Leonard: I got a triple word score with a double letter Q. If that's not a time to bust out the Scrabble dance, what's the point of having one?

Given that St. Valentine was a 3rd century Roman priest who was stoned and beheaded, wouldn't a more appropriate celebration of the evening be taking one's steady gal to witness a brutal murder?

Sheldon