Robert Stack, towering at an exact 6ft 0 (182.9 cm), embodied commanding authority in his acting career, with his height enhancing his iconic portrayals of tough, resolute characters. Best known for playing the relentless Eliot Ness in The Untouchables, Stack's stature amplified his screen presence in films like Written on the Wind, The High and the Mighty, Airplane!, and 1941. As a sportsman and host of Unsolved Mysteries, his 6ft 0 frame suited his athletic image and poised television demeanor.