Sheldon on a Ledge

After some security concerns after a break in, Sheldon finds himself sneaking out on his ledge.
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A Trapped Sheldon

Penny and Leonard come outside to see Sheldon trapped by a net from the security system they installed.
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Trap Backfiring

When Sheldon and Raj get a security system installed to combat intruders, it back fires on them.
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Wolowitz Installing Security

When the boys' apartment gets broken into, they call upon Wolowitz to help them install a security system.
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Sheldon and Raj Mingling

We never thought we'd see the day when Sheldon and Raj go to a University mixer together and meet some ladies, Martha (Jen Drohan) and Abby (Danica McKellar).
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Sheldon and Martha

That's right, Sheldon meets a girl, Martha (Jen Drohan) at a university mixer and ends up with her back at his place... with his hulk hands on.
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Raj and Abby Get Close

Might Raj be getting over his fear of women as he sits closely with the beautiful Abby (Danica McKellar) he met at a mixer.
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Raj and Abby Rock Out

Raj takes the microphone as his new girl, Abby (Danica McKellar) that he met at a mixer, plays the drums.
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Leonard and Penny Argue

As usual, Leonard and Penny get into an argument. This time? About psychics.
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Sheldon and His Hulk Hands

Sheldon defines the word cool when he puts on his toy hulk hands and in front of Raj.
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Raj, Sheldon Play Rock Band

After meeting two girls at the university mixer, Raj and Sheldon invite them for a raging game of Rock Band at the apartment.
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Decorating The Tree

Sheldon helps decorate the tree and wants to add the bust of Sir Isaac Newton, which he argues is more Christmasy than Jesus.
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The Big Bang Theory Season 3 Quotes

Wolowitz: Sheldon. You remember the first few weeks; we were looking for magnetic monopoles and not finding anything, and you were acting like an obnoxious, giant dictator?
Raj: I thought we were going to be gentle with him.
Wolowitz: That's why I added the "tator"

Wolowitz [after seeing Penny jump Leonard]: Damnit, I should have gone over and said we were back
Raj: Yeah, it was "first come, first serve."