TORI SPELLING (50 years): “Victoria Davey Spelling”—American actress and author, who became famous, or more famous, with her character, Donna Martin, in television hit, Beverly Hills, 90210, in 1990.CONAN O’BRIEN (60 years): “Conan Christopher O’Brien”—American television host, comedian, writer, and producer, who is probably most famous for hosting late night ...