http://ahcc-nutrients.com/whatis-AHCC.html What is AHCC?
http://www.youtube.com/watch?v=L3PF3DSKxfw David Wolfe Video on Medicinal Mushrooms
http://www.mushroomscience.com/
Medicinal Mushrooms types (probably a partial list- but the one's I've heard of so far)
Chaga
Reishi
Cordyceps
Coriolus
ABM (Agaricus Blazei Murill) http://starfishproject.wordpress.com/2008/10/28/abm-mushroom-extract-is-powerful-medicine-against-cancer/
Shiitake
Maitake