Sheldon goes over to Amy's house on "The Table Polarization."
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Howard is offered the opportunity to go back into space on "The Table Polarization."
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Leonard buys a dining room table for the apartment.
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What is this stick? Both Howard and Raj look ecstatic about it on "The Table Polarization."
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Howard uses a stick of some sort. Is it a game? Raj looks enthralled by it.
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Will Sheldon or Leonard win this one on "The Table Polarization"?
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Sheldon tries to get his point of view across to Leonard.
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Leonard talks to Sheldon while he's working on "The Table Polarization."
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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