I'm not ashamed to admit that I like the Christmas carol "Good King Wenceslaus." Sometimes I think it's the only carol I care about... though a bitchen arrangement can make all the difference with even some of the cheesier ditties.
The thing about "Wenceslaus," aside from the archetypal "old world" melody, is the lyrical content, which describes a model of compassion and altruism that most kings / queens / politicians / leaders lack. It's simultaneously hopeful (a model for us to live up to) and poignant / depressing (real world evidence suggests that it is extremely rare for people in positions of power to emulate the good king).
The Roches do a surprisingly good version of this tune on their Christmas record from a while back.
That's all I'm going to say about Christmas this year.