Here we go- John Lynch. (I'm using him to illustrate a point.) Another factor is emotiveness. I like someone whose feelings show. In my experience, I've noticed that textbook perfect faces aren't as good at conveying emotion as someone whose feaures are odd or less than perfect. This can matter in poser, because with a "perfect" chatachter, their face is a blank slate- uninteresting. But with a characher with a few imperfections, it gives a touch of humanity, emotion, experience.