Corn can be cooked either with or without its husk in a variety of different ways. If using the wet heat methods of boiling or steaming, make sure not to add salt or overcook as the corn will tend to become hard and lose its flavor. Or, they can be broiled in the husk. If broiling, first soak the corn in the husk beforehand.
When purchasing corn tortillas, purchase those that include lime (the mineral complex calcium hydroxide, not juice from the fruit) in their ingredient list. The addition of lime to the corn meal helps make the niacin (vitamin B3) in the tortilla more available for absorption.
We consider the benefits of eating popcorn to be much different than that of eating fresh or fresh/frozen corn, with the latter being more concentrated in nutrients. Yet, given that many people do enjoy popcorn as a snack we wanted to share with you George's perspective on this food, which you can find here.