He is in an exclusive group of men.
One of those guys that just gets better looking as he gets older. Others I can think of? James Coburn was one, and so is Sam Elliot. RDJr and Clooney also come to mind. I am sure some of you reading this can add to this. Who do you think belongs here? ( And despite what people yammer on about, it's not gender specific. There are plenty of women who get better looking just as there are many men who don't. )
Not that it matters that much; it's just that I noticed when JDM appeared on The Good Wife I thought he looked better than great, and he seemed to be very relaxed with his physicality, and that added to the attraction.
Who else?