Crackpots

Kevin Drum points out that math professors are the recipients of crackpot theories about squaring the circle, physics professors have to deal with blueprints for perpetual motion machines, and economists get "free lunch" schemes. I'd add that biology professors probably hear from creationists all the time, and archaeologists get tracts about Atlantis and how aliens built the pyramids. But what do geography professors get? Are there crackpots out there working feverishly on half-baked theories about public participation in environmental planning or the influence of market penetration on agricultural intensification, waiting to send them to me as soon as I get tenure?