Penny falls asleep when she, Wolowitz and Raj go to listen to Leonard give a presentation.
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Raj and Sheldon get into an argument when Raj is out on his blind date. Guess who she goes home with?
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Penny practices bar tending on the boys in order to learn up for her new job that will help earn her some extra cash.
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Raj gets extremely nervous and anxious after his parents set him up for a blind date with a girl from his childhood.
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Wolowitz shows up in an awfully feminine robe after sleeping with Penny's friend and forcing Penny to crash on Leonard and Sheldon's couch.
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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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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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Penny fits right in with the gang as they sit down to eat their signature food... Chinese takeout.
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Penny meets Raj and Wolowitz in the pilot episode of The Big Bang Theory. Wolowitz will begin his lifetime of sleazily hitting on her while Wolowitz is unable to talk to her.
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Simon Helberg stars as Howard Wolowitz, a friend and co-worker of Leonard and Sheldon. Wolowitz is an engineer at Caltech and still lives with his mother.
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TBBT Quotes

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.