Wolowitz Hood

Wolowitz dresses up as Robin Hood for Penny's Halloween Party and here's a pic of him talking to the guys.
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Leonard, Sheldon and Raj on the Couch

Leonard, Sheldon and Raj sit on the couch at Penny's Halloween Party all dresses in costume.
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Leonard the Cellist

Leonard join Leslie's string quartet at the cellist. However, we all know the real reason Leslie invited Leonard to join.
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Penny the Waitress

The boys go to eat dinner at the restaurant where Penny works as a waitress and she serves the guys.
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Penny Explains to Sheldon

When Sheldon discovers a necktie on Leonard's door he runs to Penny to find out what it means. Penny explains to the clueless nerd.
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Sheldon Gets Fired

Sheldon brings home his stuff after he gets fired from his job at Caltech after insulting his boss.
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Leonard Out With Penny

Leonard goes out with just Penny on a dinner date that Penny originally thought was going to be a group dinner.
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Sheldon, Raj and Wolowitz Play Jenga

Looks like Sheldon, Raj and Wolowitz were clearly too busy for their group dinner date with Penny. They have important things to do... like play Jenga!
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Leonard Asks Out Leslie

Leonard asks out Leslie in an attempt to get over his "rejection" by Penny but ends up being turned down by Leslie as well!
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Leonard Enters the Dark

Only Leonard would use a light saber to light up an otherwise dark Penny's apartment. Wow we wish we could embrace being this nerdy.
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Sheldon and Leonard are Shocked

Sheldon and Leonard look extremely shocked as they enter Penny's messy apartment. Sheldon is extremely bothered by how messy she is.
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Sheldon and Leonard Deliver

Sheldon and Leonard attempt to move Penny's delivery package up several flights of steps.. It really is a shame that elevator is always out of order.
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TBBT Quotes

Oh, Bernadette, please play my clarinet.

Raj's poem

Sheldon: I'll have a diet Coke.
Penny: Can you please order a cocktail? I need to practice mixing drinks.
Sheldon: Fine... I'll have a virgin Cuba Libre.
Penny: That's... rum and Coke without the rum.
Sheldon: Yes, and would you make it diet?