Many of his stand-up acts are impressions of his father.
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Jeff got the comedy in him from his father.
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Jeff is also a practicing psychotherapist.
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Jeff's a certified leader of the ManKind Project, an organization that helps men with life issues.
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Jeff first major screen credit was Doin' Time in 1985.
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Jeff's trademarks are voices, mugging and physical antics.
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Jeff's family says that he was born wacky.
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Jeff and his wife have one daughter together.
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He was a spokesman for Arby's restaurants in the mid-80s.
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Jeff is a drummer and has been a long time fan of Buddy Rich.
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He graduated college from Johns Hopkins University.
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He graduated high school at Nottingham Senior High School.
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Jeff played third singles on his high school's tennis team.
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Jeff has appeared on The Late Show with David Letterman 37 times.
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Jeff married Leslie Ackerman in 1979.
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Jeff is 5 feet 8 inches tall.
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