When you roast garlic it actually softens it's taste, so it isn't as strong, and it makes it sweeter too.  You can roast several heads of garlic at a time and store them in a jar of olive oil.  Then you can use the oil in the jar for salad dressings and sauces... yum.  As I mentioned before, roasting garlic in the oven makes your house smell like you are a gourmet chef, and it's simple.  I really encourage everyone to give this a try.  I got this recipe from the cookbook that Nick got me for Valentines day Cooking with Vegetables and Fruits in Season, by Sarah Raven.