Things we've learned: do not microwave...

Do not microwave eggs. They explode.

Do not microwave blue cheese. It merely melts it, and releases all of the moldy blue cheese odor:  all at once.

It would be nice if you could microwave oysters and clams in the shell, but they tend to explode as well.

Same thing with corn: it explodes.  That's why they developed microwave popcorn. 

Certain other foods, like canned tune fish, also tend to pop and shoot all over the interior of the microwave. 

Other examples would be nice....