Grilling fruits and vegetables, makes it them easier to eat. It heightens their flavors, and brings your dish to a whole new level. Try it with Fruits also, great dessert on their own this way. With out adding sweeteners and extra calories.
A grill wood, charcoal, or gas, they will all work. Smoking adds an extra depth of flavor to the dish. Smokers are easy to make at home using wood chips, follow directions on package, and a foil pouch, and poke holes into it for the smoke to escape.
Note: meats also benefit from this process.