This is obviously a no brainer, but it's a good reminder of a great way to cook a veggie.
Clean several corns on the cob
Spread with little margarine
Season with salt and pepper
Individually wrap in aluminum foil and seal well
Place on a grill (or I guess you could do it in the oven) and cook until finished (sorry I'm no help here, I just kinda pull back the foil and see if it looks done).