The key to a great microwave baked potato is cutting a thin wedge, lengthwise. This is done so the steam can fully escape from the potato, resulting in a dry and fluffy pulp.
Consider sprucing up your spuds with healthy toppings, such as:
Broccoli spears Sea salt
Salsa & fresh cilantro Nonfat yogurt
Crumbled turkey bacon Low-fat chicken broth
Grilled veggies Chipotle peppers
Wasabi paste Low-fat cottage cheese