Recipe from Scott Johnston of Louisiana

Ingredients:

Whole, unhusked corn (as many as will fit on the BBQ grill)

Directions:

Keep temperature at 250-300 degrees
Cook on grill for about 15 minutes
Husk will brown.
Rotate as needed to prevent burning.
Take off husks, be careful, will be very hot.
Add butter or margarine, salt to taste. 

Very simple and tasty