12. Gregory Peck
Notable Roles: To Kill a Mockingbird (1962); Roman Holiday (1953); The Omen (1976); The Guns of Navarone (1961)
Gregory Peck's roles helped shape the very idea of a hero and always carried a cultivated demeanor that he kept even when the cameras weren't rolling. While maintaining a popular film career between the 1940s to the 1970s, he developed standards of life and dress that have been upheld by many generations since Peck's era.