A lot of the old movie stars couldn't act their way out of a box of wet tissue paper, but they were successful because they had distinctive personalities. They were predictable brands of breakfast cereal: on Wednesdays we had Quaker Oats and Gary Cooper; on Fridays we had Wheaties and Clark Gable. They were off-the-shelf products you expected always to be the same, actors and actresses with likable personalities who played themselves more or less the same role the same way every time out.