Mark Thomas Miller was born in Louisville, Kentucky, grew up in Glen Ellyn, IL, and went to High School in Albany, NY. His father is a retired grain merchant and his mother is celebrated oil painter Mary Miller. After one year at Wagner College on Staten Island, he dropped out to pursue his acting career in New York City--which included studying at the Actors Studio with the late Lee Strasburg and appearing in numerous plays and commercials. He eventually moved to Los Angeles and got his big break in the NBC series "Misfits of Science." In 1991, he was in a disfiguring accident that stalled his career, so he became a building contractor specializing in home remodeling for the handicapped, which he did until 2003. Mark made a minor attempt at reviving his career by performing with the Groundling Improv Group, but soon found out that he had lost the patience required for the business of acting. In 2003, he started a product engineering and development company. He lives in Los Angeles with his wife and two children.