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He works with the 'Earth Communications Office' to educate the entertainment industry about environmental issues.
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Played Giovanni in the world premiere rock musical version of "'Tis A Pity She's A Whore."
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While in high school, he managed to get cast in a rival high school's theater production.
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After high school he became an active member of the "West Coast Ensemble" group doing live theater.
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He has a fondness for dogs and has owned many over the years.
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He did most of his own acrobatic riding in the show The Young Riders.
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He performed in a radio broadcast of "Old Coyote," the true story of Ben Old Coyote.
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During the filming of The Young Riders, he had a pet lizard named Sulu.
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He plays the acoustic guitar "a little bit."
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Gregg's favorite cars are old Ramblers and Studebakers.
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He was named one of Us magazine's "10 Sexiest Bachelors" for 1989.
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He wanted to be an actor after seeing the movie Oliver when he was in the sixth grade.
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He is left handed.
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One of his favorite authors is Douglas Adams.
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He has Cherokee and Osage roots.
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He has one brother and three sisters.
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His favorite food is Thai.