In the first episode of Seinfeld, Kramer's last name was Kessler. Producers were concerned that Larry David's friend Kenny Kramer (who was the bases for the character) would object to the use of his name. Eventually they worked out a deal and the character was renamed "Kramer"
Stuff you didn't know about Seinfeld
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Seinfeld was originally conceived as a one-off, 90 minute special called "Stand Up"
Stuff you didn't know about Seinfeld
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Jerry Seinfeld's former friend Michael Constanza sued the "Seinfeld" creators, claiming that the character of George was based on him and thus violated his privacy. He lost
Stuff you didn't know about Seinfeld
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In every episode of Seinfeld, there is either a visual reference or a mention of Superman
Stuff you didn't know about Seinfeld
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Larry David provided the voice of the George Steinbrenner character in "Seinfeld"
Stuff you didn't know about Seinfeld
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Kenny Kramer, who was the basis for his namesake in Seinfeld, ran a bus tour through New York City which visited sites seen in the show. The bus tour was parodied in an episode of the show
Stuff you didn't know about Seinfeld
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Elain's New Yorker cartoon in a 1998 episode of Seinfeld actually made it into the real-life New Yorker
Stuff you didn't know about Seinfeld
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