Leonard has minor surgery on his nose on The Big Bang Theory. "The Septum Deviation" is the ninth episode of the show's eighth season.
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Johnny Galecki plays Leonard Hofstadter on The Big Bang Theory
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Bernadette and Amy bring the Death Star Cake to the Star Wars Day celebration.
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After having an emotional dream, Sheldon hugs Leonard to show he cares.
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Amy and Bernadette make a Death Star Cake to celebrate Star Wars Day.
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Leonard and Penny attend a funeral and pay respects on May 4th.
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Leonard consoles Sheldon after letting him know a hero of his died.
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The gang introduces Penny to Star Wars Day on May 4th.
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TBBT Quotes

Sheldon: Are you still mad about the sperm bank?
Leonard: No!
Sheldon: Do you want to hear an interesting thing about stairs?
Leonard: Not really.
Sheldon: If the height of a single step is off by as little as two millimeters most people will trip.
Leonard: I don't care—two millimeters?! That doesn't seem right.
Sheldon: No, it's true! I did a series of experiments when I was twelve; my father broke his clavicle.

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon