Here's an article about him:
http://www.lhup.edu/~dsimanek/fe-scidi.htm
And here's the Wikipedia article:
http://en.wikipedia.org/wiki/Flat_Earth_Society
Shouldn't we teach this stuff in science classes with creationism as alternatives to those tyrannical, prevailing theories that are repressing these poor folks to whom rational thought gives headaches?
Teach the controversy!
There is NO controversy to teach. We should teach about what sort of intellectual errors, emotional problems, moral failings, self-imposed blindness and abnormal psychology cause people to believe that the earth is flat, that humans were "created" and the like.