Wolowitz and Bernadette celebrate Halloween by dressing up as Smurfs on The Big Bang Theory. "Holographic Excitation" is the fifth episode of the show's sixth season.
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Wolowitz is caught in an argument between his mother and Bernadette when The Big Bang Theory kicks off Season 6.
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Howard finds out he must reschedule his wedding on this episode of The Big Band Theory. "The Launch Acceleration" is the 23rd installment of the show's 5th season.
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The men of The Big Bang Theory do their thing in this shot from the sitcom. It's courtesy of the episode "The Shiny Trinket Maneuver."
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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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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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Howard and Bernadette are seen here during a scene fromThe Big Bang Theory. The photo is courtesy of the episode "The Herb Garden Germination."
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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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That's Katee Sackhoff and that's George Takei. Both guest star as themselves on the episode "The Hot Troll Deviation."
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Science pays off for Wolowitz on the season four premiere. He gets some solid use out of his robotic arm.
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A flashback to the nerds when they first met playing Gamecube together.
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TBBT Quotes

Penny: What actor holds the record for being named People magazine's Sexiest Man Alive?
Sheldon: William Shatner!
Leonard: I don't think it's Shatner.
Sheldon: Then it's got to be Patrick Stewart

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