fresh or frozen corn is really good, one of our favorites to make in the microwave.
Fresh-microwave about 4 minutes in the husk.
We make a garlic and lemon w/water and cornstarch mixture, heated on the stove until thickened, then brush it on the corn. (we keep this thickened mixture in the fridge for future corn during corn season) Sprinkle with chili powder or your choice of flavor. I like black pepper on corn.
Microwaving veggies is better than boiling because it doesn't wash away the nutrition. When we have a veggie brown basmati rice, we add some raw broccoli trees and microwave it around 5 minutes for a bowl, the trees are half done and the rice is hot.
Potatoes and sweet potatoes do very well in the microwave. Put a plate under the sweet potatoes in case they weep syrupy liquid. 8 potatoes or 4 large sweet potatoes usually cook in about 22 minutes in my microwave. If I'm in a hurry with the sweet potatoes, I put them hot into a sink of cold water to cool them off. Then the skin comes off 1/2 by itself, and I can pull the rest off with a knife, drain the sweet potatoes-the outside is wet. We keep the resulting cooked potatoes in the fridge for assembling meals.
I like the sweet potatoes with greens and veggie rice and the potatoes diced with an oil free gravy, or a little vinegar on them.