Mrs. Hofstadter goes with her son Leonard to work and meets all the guys at lunch. She quickly analyzes each one of them.
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Wolowitz dresses up as a cable guy to sneak his way into the America's Next Top Model house. Here two contestants, Analeigh Tipton and Samantha Potter guest star.
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A picture of the whole gang dressed in their clothes from the Renaissance Fair as they get to meet Penny's new date, Eric (Travis Schuldt)
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Leonard comes home to find out the guys spied on how his date with Penny went via a webcam they put in the hallway.
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Wolowitz teaches Sheldon Mandarin so he can correctly order his Chinese food to make sure he gets tangerine instead of orange chicken. Makes sense to us.
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Penny tries to organize a surprise party for Leonard with his friends Sheldon, Howard and Raj.
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Wolowitz uses his peanut allergy to try and distract Leonard long enough for Penny and the gang to set up her surprise party.
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The boys all end up competing for Sheldon's sister, Missy's affection. Raj and Wolowitz even get into a physical fight.
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Wolowitz tries to ask out Sheldon's sister Missy (Courtney Henggeler) when it becomes his turn and he gets shot down horribly. Poor Wolowitz.
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Leonard and Wolowitz try desperately to hit on Sheldon's attractive twin sister Missy (Courtney Henggeler) without much success.
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Penny humiliates Leonard about his toys and he decides he's going to get rid of all his nerdmabilia in this episode of The Big Bang Theory.
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The guys gather round Leonard as he sits in his time machine which arrive. The time machine is, of course, the prop from the 1960 movie that he bought off ebay.
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TBBT Quotes

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.

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