I came across a list of bizarre diseases from some no-name site, but were probably also just genetic problems. Things such as being allergic to water, skin being blue, etc. The one I thought was the most interesting was this one guy who didn't feel cold, he can run through snow naked and not get the slightest shivers. Not sure if I'd like to have that or not. My favored season is the winter, but not being able to feel the cool breeze might be overwhelming.
