On a lightly floured surface, roll dough to a 1/8-in.-thick circle; transfer to a 9-in. pie plate. Trim to 1/2 in. beyond rim of plate; flute edge. Refrigerate 30 minutes. Preheat oven to 425°. , Line crust with a double thickness of foil. Fill with pie weights, dried beans or uncooked rice. Bake on a lower oven rack until edges are golden brown, 20-25 minutes. Remove foil and weights; bake until bottom is golden brown, 3-6 minutes longer. Cool on a wire rack., Meanwhile, in a heavy saucepan, combine marshmallow creme, chocolate chips, butter, unsweetened chocolate and coffee; cook and stir over low heat until chocolate is melted and mixture is smooth. Cool. Fold in whipped cream; pour into crust., For topping, in a large bowl, beat cream until it begins to thicken. Add confectioners' sugar; beat until stiff peaks form. Spread over filling. Refrigerate at least 3 hours before serving. Garnish with chocolate curls if desired.