I liked this guy on Unsolved Mysteries, and his roles in Airplane! and Baseketball....Good man, sad to see him go.Robert Stack, whose granite-eyed stare and menacing baritone spelled trouble for television's fictional criminals in "The Untouchables" and real ones in "Unsolved Mysteries," died at his home. He was 84.
Stack's wife Rosemarie found him slumped over at about 5 p.m. Wednesday. He died of heart failure, she said. The actor had undergone radiation treatment for prostate cancer (news - web sites) in October.