Sheldon Goes Rock Climbing

Sheldon attempts to befriend Kripke in order to use his super computer at work. As a result, Sheldon is forced to go rock climbing and isn't too happy with the height.
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The Big Bang Theory Season 2 Episode 13 Quotes

Sheldon [looking at the women's book in a bookstore]: "Coping with the Death of a Loved One." My condolences
Woman: Thank you
Sheldon: Family or friend?
Woman: Family
Sheldon: Too bad. If it had been a friend, I'm available to fill the void

Penny [referring to Sheldon]: What's up with Ichabod?
Leonard: Oh, he's trying to make a new friend
Penny: Well good for him
Leonard: Unless he makes one out of wood like Geppetto, I don't think it's going to happen