Paul Stamets is a very focused man. He's made a career out of fungi from books like Mycelium Running: How Mushrooms Can Help Save the World and Growing Gourmet and Medicinal Mushrooms to editing scientific journals and advising medical schools. His website Fungi Perfecti is full of resources and information. Spend a little while there and you'll get the idea that there's a lot more to the kingdom than stuff growing in the back of your fridge.
This video will give you a little peek into his world. It ranges from basic biology to the really amazing. Who knew that the world's largest organism is a gigantic fungus in Eastern Oregon or that they use ionizing radiation the way that plants use light? Then he gets into half a dozen ways that fungi can be used to address very real problems. They include his revolutionary patents for carpenter ant and termite abatement to breaking down the hydrocarbons in diesel-soaked ground and DoD research on agarikon mushrooms that produce the most specific and effective agents for each individual strain of bird flu as well as cellulose-based ethanol and carbon sequestration.