Mark Harmon: Mark Harmon. Actor: NCIS. Thomas Mark Harmon was born on September 2, 1951, in Burbank, California, to football player and broadcaster Tom Harmon and actress and artist Elyse Knox (née Kornbrath). Harmon played college football and found success as one of TV's hunkiest actors. While many of his roles have relied on good looks, Harmon was impressive on St. Elsewhere (1982) as the suave doctor who contracted AIDS.
His sisters are...
