Very interesting site, with color photographs (including microscope views) of fungi. The "Fungus of the Month" features information about one species, presented in an informative, and often amusing way. Students really like it, and learn a lot about fungi (usually not one of their favorite subjects).
There is an extensive collection of photos, that can be accessed by phylum etc. One drawback is that there is no easy way to search for information on one particular fungus that has been featured in the "Fungus of the Month".