Bernadette (Melissa Rauch) joins the guys for lunch at work as she begins to bond with Leonard over his work.
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Wolowitz confronts Leonard when he gets jealous over his friend bonding with his girlfriend, Bernadette.
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Who knew Wolowitz could sing and play the keyboard? Well soon Bernadette will know.
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Howard Wolowitz comes to visit his new girlfriend, Bernadette (Melissa Rauch) at the Cheesecake Factory. He's desperate to keep her.
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Wolowitz is desperate to try and keep his new girlfriend, Bernadette (Melissa Rauch) that Penny introduced him to.
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Raj attempts to scare the guys with a ghost story but they look a little more bored than scared.
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Leonard, Raj and Wolowitz are definitely not the manliest of men. Here they are a little scared on their camping trip.
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Leonard, Raj, and Wolowitz go camping with style... an entire array of electronics.
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TBBT Quotes

Sheldon: Are you still mad about the sperm bank?
Leonard: No!
Sheldon: Do you want to hear an interesting thing about stairs?
Leonard: Not really.
Sheldon: If the height of a single step is off by as little as two millimeters most people will trip.
Leonard: I don't care—two millimeters?! That doesn't seem right.
Sheldon: No, it's true! I did a series of experiments when I was twelve; my father broke his clavicle.

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