Par-Cooking Corn on the Cob in a Microwave
The microwave is a fantastic place to cook vegetables, especially corn. You can fully cook an ear in around 3 minutes, in the husk. Leaving the corn in the husk seems to trap a great deal of steam as it cooks, speeding up cook time. If you're looking to get some nice color from the grill while avoiding the wait, I would try 2 - 2:30 in the microwave, depending on how done (or fresh) you like your corn.