Mark Harmon / Biography

With an athletic father and an actress mother, it is no surprise Harmon played college football and has found success as one of TV's hunkiest actors. While most of his roles have relied on little more than good looks, Harmon was impressive as the suave doctor on "St. Elsewhere" (1982) who contracted AIDS.

Son of Tom Harmon and Elyse Knox. Sister Kelly Harmon is the Tic-Tac model. Oldest sister is Kristin Harmon, painter and ex-wife of Ricky Nelson. That makes him the uncle of musicians Matthew Nelson and Gunnar Nelson of the band Nelson and the actress Tracy Nelson. In 1987 Harmon and his wife, Pam Dawber, sued his sister Kristin Harmon for custody of her youngest son, Sam.