Crush all but 6 to 10 Oreos, add butter and mix well. Press the crushed cookies into a 13x9x2 baking dish. Pour the jar of hot fudge over the crust and spread evenly. In a large bowl add the cream cheese, sugar, pudding and mix thoroughly. Gradually add the milk until combined. Fold in the Cool Whip and spread the mixture over the crushed Oreo cookies and fudge.