Many years ago my Mother bought me a popcorn popper bowl for my microwave. It was that heavy beige plastic that was all the rage for microwave stuff back then. It has something in the plastic at the bottom of the bowl that concentrates the microwave energy. More than once I've reached into the bowl and singed the tips of my fingers. It does a decent job of popping, it's dishwasher safe, and it makes a decent serving bowl.
I like my popcorn buttered, normally with salt but also occasionally with some fresh ground pepper.
I also occasionally put powdered chicken or beef stock on it, which gives it an interesting flavor.
Hum... Going to have to get some of that Kernel Seasonings. Nacho cheese sounds really good.