Actress Janet Leigh’s early film career found her playing wholesome ingénues in everything from musicals and Westerns to comedies and thrillers, which made excellent if artistically unremarkable use of her generous smile and unflaggingly positive nature. But in 1960, Leigh’s name – and terrifying screams – became synonymous with cinematic legend as Alfred Hitchcock’s doomed heroine in the infamous stabbing shower scene from “Psycho.” Despite her later roles, which were eventually superceded by turns as a mother, humanitarian and best-selling author, audiences would still forever remember those