Johnny Galecki as Leonard Hofstadter
Johnny Galecki stars in The Big Bang Theory as Leonard Hofstadter, a physicist at Caltech. Leonard is the more social of his nerd friends.

Rating: 4.9 / 5.0 (13 Votes)
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TBBT Quotes

Leonard: I'm not a crybaby.
Penny: Toy Story 3?
Leonard: They were holding hands in a furnace!

Sheldon: I asked myself what is the most mind-numbing, pedestrian job conceivable and three answers came to mind: a toll booth employees, an Apple store genius, and what penny does. Because I don't like touch other peoples' coins and I refuse to contribute to the devaluation of the word genius, here I am.