- David began acting in TV commercials at the age of seven. According to a TV Guide interview in December 1970, he enjoyed science and math at school as well as a number of sport (baseball, basketball, water skiing, and hunting). At that age, his ambition was to go to the University of Southern California and to become a dentist. After leaving acting in 1981, David went into the mobile electronics business.
- IMDb mini biography by: http://www.nannyandtheprofessor.com/GrinArticle.html
- SpouseErin Colleen Doremus(? - present) (4 children)
- General manager for a company that installs mobile electronics in Los Angeles.
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