I have a pretty huge obsession with geography.  I love knowing where things are, and I can stare at a map for hours.  Whenever I read a book that is set in another part of the world, I always have to look it up, I need to be able to have an idea of where everything is.  So, it just follows that I would love the idea of using maps as decorative accents (and yes, I am fully aware that this is nothing new, I just still love it!)