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Jeffrey has 5 children, 1 with first wife, Kathryn Mitchell and 4 with present wife, Kasia.
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Jeffrey married to Kathryn Mitchell from 1991-2000.
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Jeffrey guest-starred in Three's Company three seperate times, as three different people.
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Jeffrey voiced the character of King Neptune in The SpongeBob Squarepants Movie in 2004. He also voiced the same character in the video game based on the film also released in 2004.
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In 2006 Jeffrey was in the movie The King of Central Park.
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In 2004 Jeffrey was in the following movies:
Nobody's Perfect, Eurotrip, Hellboy, and Funky Monkey.
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In 2003 Jeffrey was in the following movies:
Scorched, Malibu's Most Wanted, My Boss's Daughter, and Under the Tuscan Sun.
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In 2001 Jeffrey was in the following movies:
Never Again and Get Well Soon.
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In 2000 Jeffrey was in the following movies:
Pollock and How the Grinch Stole Christmas.
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In 1999 Jeffrey was in the following movies:
Muppets From Space, Teaching Mrs. Tingle, and Girl, Interrupted.
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In 1998 Jeffrey was in the following movies:
Doctor Dolittle, There's Something About Mary, and Meet Joe Black.
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In 1996 Jeffrey was in the movie Big Bully.
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In 1995 Jeffrey was in the following movies:
My Teacher's Wife and Heavy Weights.
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In 1994 Jeffrey was in the movie Radioland Murders.
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In 1993 Jeffrey was in the movie A House in the Hills.
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In 1992 Jeffrey was in the following movies:
Article 99 and Crossing the Bridge.
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In 1991 Jeffrey was in the following movies:
Pastime, City Slickers, and Life Stinks.
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In 1989 Jeffrey was in the following movies:
Lisa and Brenda Starr.
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In 1987 Jeffrey was in the movie Three O'Clock High.
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In 1984 Jeffrey was in the movie No Small Affair.
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In 1983 Jeffrey was in the following movies:
Mr. Mom and The Man Who Wasn't There.
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In 1982 Jeffrey was in the movie Dreamchasers, in which he also played a character named Jeffrey.
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In 1981 Jeffrey was in the movie Saturday the 14th.
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Jeffrey taught theater classes at Wayne State University in Detroit, Michigan.
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Jeffrey got a Bachelor of Arts at San Francisco State University, San Francisco, California.
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Jeffrey got a Master of Arts at Wayne State University, Detroit, Michigan.
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Jeffrey has a daughter, Molly who was born in 1975.
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Jeffrey was originally only to appear in the pilot of
Arrested Development, but his performance was so well-received by the producers he was immediately added to the cast on a full-time basis.
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Jeffrey is the co-owner of Skylight Books in the Los Feliz area of Los Angeles.
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Jeffrey was the director of a production of Burn This at the Skylight Theater in Los Angeles.
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Jeffrey used to be a teacher at Milton Katselas' Beverly Hills Playhouse.
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Jeffrey became a grandfather in December 2004, when his daughter gave birth to a son, Mason Jay Moore.
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Jeffrey and his wife, Kasia, had a son, Gabriel on the 10th December, 2004.
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Jeffrey married Kasia Ostlun on the 6th October 2001.
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Jeffrey's middle name is Michael.
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Jeffrey is 6' 1½" (187cm).
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Jeffrey is Jewish - coincidentaly so is his
Arrested Development TV wife Jessica Walter, which makes George Sr.'s conversion to Judaism even funnier.