Mix together crumbs and margarine. Press mixture onto bottom of a 9-inch springform pan. Melt coffee and chocolate over low heat; stirring until smooth. Cool.
Mix cream cheese, sugar and vanilla extract at medium speed of electric mixer until well blended. Beat in Marshmallow Creme and coffee mixture. Fold in whipped topping; spoon over crust. Chill until firm.
Source: E-Cookbooks.net