with all the talk of zombies in the news lately..some real possibilitys http://news.nationalgeographic.com/...fungus-new-species-fungi-bugs-science-brazil/
Related fun 5 Scientific Reasons a Zombie Apocalypse Could Actually Happen 7 Scientific Reasons a Zombie Outbreak Would Fail (Quickly)
Saw these on a BBC doco series DVD that I managed to win somehow. Brain fungus is weird stuff. Fortunately they're all specific to an individual insect species, so we won't be seeing mushrooms growing from human heads too soon.