Maps are pretty much my special interest. So is anything that can be communicated via maps, e.g. demographics and transport networks. This has been true all my life.
Wisguy wrote:
You can add me to this list!

Unfortunately, I was adopted into a strictly blue-collar family that thought that all of my map stuff and so forth (as ably described by the other posters in here) was nothing more than a 'sickness' to be aggressively treated, because it did not fit with a 'career' in the bowels of a local paper mill, rather than a legitimate career path to be nurtured.
I don't see myself ever recovering from that.

Mike
Your post quoted above especially struck me and it was a real shame. I was with foster parents for the best part of a year when I was around the age of 7. If I ever looked at a map, or ever went near a map, or looked at a TV when a map (beyond my control of course) was on the screen, or even used the word "map" in a sentence for whatever reason... they would come down on it very aggressively.
I also had a special interest in mathematics at that age, and the foster parents successfully managed to kill that interest. They didn't kill the special interest in maps, though. Similarly, if I even used the word "number" in a sentence or said "one" or "two" or "three" or any other numeral in a sentence, they'd go into an aggressive rage at me.