(Born Jan. 29, 1945) Tom Selleck is an American actor best known for his starring role on the long-running television show Magnum P.I. Rising to 6'4", Selleck's dark hair, chiseled good looks, muscular and hairy-chested physique, sex appeal, iconic moustache, and good sense of humor make him popular for action, drama, and comedy parts; his Magnum role was a mix of all three.