Sep. 24, 2007
Returning Series
30 min.
CBS TV Network

Top Contributors

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The Big Bang Theory

Leonard and Sheldon are brilliant physicists, the kind of "beautiful minds" that understand how the universe works. But none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny moves in next door.

Characters: #2 of 15 (Full List)
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Leonard Hofstadter The Big Bang Theory
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Leonard Hofstadter

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  Played by:
Johnny GaleckiJohnny Galecki
John Mark "Johnny" Galecki (born April 30, 1975) is an American actor. He is best known for ...

Character Bio

Leonard Hofstadter photo
Name: Leonard Leakey Hofstadter, PhD.
Occupation: Experimental physicist.
IQ: 173.

Leonard Hofstadter is an experimental physicist at Caltech. He shares an apartment with Sheldon Cooper.

While Leonard, along with the other geeks, is somewhat socially inept, Leonard would like to be better accepted outside of his geeky social group. Leonard is more well-adjusted than his companions, being more willing to try different things.

Episode Screenshots

08x24 - The Commitment Determination
Season 8, Episode 24
05x09 - The Ornithophobia Diffusion
Season 5, Episode 09
06x20 - The Tenure Turbulence
Season 6, Episode 20
09x09 - The Platonic Permutation
Season 9, Episode 09
[More Episodes]

Leonard Hofstadter Quotes

09x08 - The Mystery Date Observation Season 9 / Episode 8: - The Mystery Date Observation

Penny Hofstadter: I think it's so adorable you're making Sheldon breakfast.
Leonard Hofstadter: Mm, he's having a rough time. Amy broke his heart. The DVR cut off the last minute of Dr. Who. That crow followed him home.
Penny Hofstadter: Aren't you worried you;re making french toast on oatmeal day?
Leonard Hofstadter: Ah, well, what's this? A pot of oatmeal, or, thanks to you, what I will now call gloatmeal.
Penny Hofstadter: Oh, I don't want credit for that.
09x07 - The Spock Resonance Season 9 / Episode 7: - The Spock Resonance

Leonard Hofstadter: When did we get a wall safe?
Sheldon Cooper: When there was no more room in the floor safe.
Leonard Hofstadter: When did we get a floor safe?
Sheldon Cooper: When we got the security camera!
Leonard Hofstadter: There's a security camera?
Sheldon Cooper: Aquaman, protecting your home since 2012.
Penny Hofstadter: Oh my God, we've done things on that couch.
Sheldon Cooper: Yeah, you don't have to tell me.
[More Quotes]

Leonard Hofstadter Photos

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