Been studying plant-fungal interactions for about 10 years, including a master's degree I dropped out of and never actually finished* so I'm full of fungus facts i don't really get to use ever.
*Actually did all the course work and lab work but didn't finish my thesis in time
Ooooh Chaetomium. I had so many Chaetomium in my collection. (I was trying to isolate endophytic fungi from plant roots.)