Penny Comes Over

After Leonard leaves the party embarrassed by what her jerk of an ex said, Penny comes over to comfort Leonard. She's dresses as a kitten.
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Sheldon and Leonard Open the Door

Sheldon and Leonard open the door at Penny's Halloween Party dressed like quite the nerds as Penny's large friend enters the apartment.
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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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The Big Bang Theory Season 1 Quotes

Leonard: We need to widen our circle.
Sheldon: I have a very wide circle. I have 212 friends on MySpace.
Leonard: Yes, and you've never met one of them.
Sheldon: That's the beauty of it

Leonard: At least I didn't have to invent 26 dimensions just to make the math come out.
Sheldon: I didn't invent them, they are there!
Leonard: In what universe?
Sheldon: In all of them, that's the point