When Jerry takes away his spare keys from Kramer, Cosmo takes off on an adventure to California to become an actor on "The Keys."
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George gets into a fight with Mike over a parking spot outside Jerry's in "The Parking Space."
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A picture of the infamous Kramer portrait by Jerry's girlfriend, Nina. It's known as "The Kramer."
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Jerry witnesses a hit-and-run and confronts the woman only to end up dating her in "The Good Samaritan."
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The Seinfeld gang finds itself in a limousine when George pretends to be some kind named O'Brian in "The Limo."
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Keith Hernandez guest stars on Seinfeld as himself and goes on a date with Elaine during "The Boyfriend."
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Kramer goes down when he gets spit on by Keith Hernandez. Jerry has a different theory, however.
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Elaine and Jerry set George up on a fix-up and Kramer's contribution is a defective condom. Nice.
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Seinfeld Season 3 Quotes

George: A man gave me a massage.
Jerry: So?
George: So he had his hands and, uh, he was
Jerry: He was what?
George: He was touching and rubbing.

Raymond: (massaging George's hamstring) How did you do this?
George: (VERY tense) Do what?
Raymond: How did you hurt your hamstring?
George: (quickly) I dunno
Raymond: You don't know?
George: I dunno
Raymond: Okay, where did this happen?
George: (Quickly again) Korea.
Raymond: Korea?
George: Korea.
Raymond: You hurt yourself in Korea?
George: I dunno.