Rinse the turkey (optional) and pat it down until it's as dry as possible. Remove any extra feathers.
In a small mixing bowl, combine the crushed garlic, salt, pepper, and margarine or butter to create a paste.
Place the bird, facing up, into a large roasting pan. Generously smear the paste over the entire top and sides of the bird, making sure to get into all the crevices. Repeat with the inside of the bird.
an (don't put it on a rack because it will dent the breasts). Smear the paste all over the back of the bird. With the back still facing up, either cover the roasting pan with a lid, foil, or wrap OR if you have enough space in your refrigerator to let it "breathe," leave it uncovered to dry age. Refrigerate the turkey and let it brine for at least 24 hours or a maximum of 48 hours.
On the day you're planning to eat the turkey, preheat the oven to 400°F. Prepare the stuffing, as directed on the box (though I like to add some mushrooms and onions).
Flip the turkey over in the pan and put the stuffing inside the cavity. Truss the opening. Flip the turkey back over so that its back is facing up.
Pour a large glass of water (about 12 oz) over the bird (the seasoning should stay put because of the oil content). Have a baster or meat injector ready (a meat injector is better if you really value crispy skin) so that you can baste/inject the juice every 15-20 minutes.
Roast at 400°F for 30 minutes, then reduce the temperature to 350°F and begin basting/injecting. If at any point you notice the bottom getting dry or burnt, add more water. Roast the turkey for about 15 mins/lb (reduce this to 13 mins/lb if you chose not to stuff the turkey). Using a set of turkey lifters (the sharp kitchen tools that look like small pitchforks), flip the turkey halfway through cooking so that it ends up with the breast facing up. Sprinkle more paprika on the top and sides to fill in any that melted away or got scraped off in the process. If the skin begins burning at any point, put foil over the top, but this shouldn't happen since you roasted it upside down for the first half of the cooking time.
Using a meat thermometer, check the temperature of the turkey by inserting the needle through the crease where the thigh meets the breast and stick it deep into the meat of the thigh. The turkey will be done when the temperature reaches 165°F, but since it will continue to cook as it rests, you can remove it when the temperature reads 160°F. However, the MOST important temperature is that of the stuffing, so make sure that the center of the stuffing has reached 165°F before removing the turkey from the oven.
Rest for 20-30 minutes, or until it's cooled enough to be able to carve. Untruss and serve carved or whole.