In a heavy skillet, melt 2 T of the butter over moderate heat. When foam subsides, add bread crumbs, and garlic. Toss for 2-3 minutes or until mixture is crisp and golden. Stir in parsley and grated cheese. Place oysters on the half-shell in a single layer on a shallow baking pan. Sprinkle crumbs on the oysters. Dot with tiny bits of the remaining butter. Bake in top third of preheated 425 degree oven for 12-15 minutes or until crumbs are golden and juices are bubbling in the pan. Serve at once as an appetizer or first course.