Warning! Time Suck Ahead!
I was doing a little research and ran across this blog: Strange Maps.
Holy crap. There are historical maps, fictional maps (Gotham City, anyone?), speculative maps (a post-Armageddon map), humorous maps (South America, made out of laundry), statistical maps (patient:doctor ratios by area) … all kinds of stuff.
All with commentary, and a fascinating look into different ways of viewing the world.