...and then there are, well, these guys. I only list this here because I find these tracts enormously amusing as well as deeply disturbing. These little bundles of weirdness are often found lying atop urinals or gas pumps, on bus benches and tucked onto shelves in libraries. But you can avoid the hassle of hunting them down by reading them online!
For a great Cthulhuian spoof of Chick Tracts, check out this Cthulhu Chick Tract.