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In April 1998, Sean wrote a short story that was published in Jane magazine.
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Sean owns a teal 1965 Cadillac convertible.
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Sean was cast in the movie "Lost in Space" as Major John West, however it was decided that he wasn't right for the role after he arrived for rehearsals and the part ended up going to Matt LeBlanc.
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Sean took acting lessons at the Young Actor's Space.
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Sean appeared in ads for Kelloggs and McDonalds, he was also in the National Milk Board's "Milk Does a Body Good" campaign.
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Sean wrote and sang the song "Come In My Mind", which was used in his movie "Raging Angels".
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Sean has been in the following TV movies "My Life As a Babysitter"," The Accident", "Guinevere", "Run the Wild Fields", "Diamond Hunters", "Acceptable Risk" and "Dead Lawyers".
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Sean has a dog named Donut.
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Sean is a supporter of the charity Racing for Kids.
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Sean put out a CD called Johnson was a Snowball who Loved the Beach in 1993.
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Sean attended John Foster Dulles High School in Sugarland, Texas graduating in 1984.
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Sean practices Brazilian Jiu-Jitsu with Shawn Williams, in May 2008 he received his black belt.
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Sean is 5' 11" (1.80m) tall.
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His favorite word is "Velvet".
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If he were to describe himself in two adjectives it would be "concentrated" and "disciplined".
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He says that his most memorable travel destination is Phukett, Thailand.
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Sean thinks that people are more friendly in Texas than they are in Los Angeles.
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When Sean was younger, he used to skip school to go surfing, with his mother's blessing.
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He is a dyslexic.
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His parents divorced when Sean was a teenager.
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Sean's parents are Paul and Geannie Flannery, father is a salesman, and his mother is a real estate broker. He has 2 sisters, Shannon and Megan.
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He starred with Melina Kanakaredes, JoBeth Williams, and Talia Balsam in the movie "Into the Fire" (2005).
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According to Sean, the best advice his mother gave him was that a smile is the best form of currency in the world.
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He loves sports. skiing, soccer, football, karate, and surfing.
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In 1996 Sean was nominated for the MTV movie award for best breakthrough performance for the movie "Powder".
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Sean won Neon celebrity races in the years 1994, 1995, 1996, 2001, and the Toyota Pro-Celebrity races in 1997 and 1998. He also races shifter karts.
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He studied for a business degree at the University of St. Thomas.
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Sean is a triathlete with a black belt in karate.