So consumed by his hobby is he that early in his 18-year marriage to former freelance science writer Carol Foote, the couple decided that Mandel needed an agreement restricting his stargazing time.

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Now, his hobby is conducting ghost tours.

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His main hobby is chess, at which he seems to excel.

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His other problem, which is common in hobby loss cases was not having a business plan.

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In Antrim, Terry Madill's study is littered with memorabilia of his hobby, the Titanic.

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Happiest is a man who has his vocation as a hobby.

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Arriving as an undocumented 15-year-old, Mr. Alvarez, 44, is now a naturalized citizen who has gradually transformed his family's hobby into a thriving business.

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Mandel claims that the isolation demanded by his hobby--most nights, it's just him and the universe--is one of the best things about astronomy.

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Gillette's hobby is to visit pool halls solo in dangerous neighborhoods and, with no cash in his pocket, challenge desperados to big-dollar games.

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That collector is Michael Mattis, 44, a former Los Alamos labs physicist who has turned his photo-collecting hobby into a full-time venture.

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