I think that's what so great and fascinating about zombie films. There are underlying ideas and themes beneath the gore of it. They are able to relate current situation and themes that are occurring in the world within it while scaring audience (or making them laugh).

And on a different note, every time I see "SUPER RU!!!" in your words of wisdom, it makes me sing in my head "It's super ru, supper ru, it's super ru!!!" with fanfare and trumpet. It inevitably makes me think of a kangaroo and then Roo, the baby kangaroo in Winnie the Pooh. :-P