1. Heat oven to 350 degree F. Combine cookie crumbs and cinnamon in bowl. Stir in butter until crumbs are moistened. Press into the bottom of a 9-inch springform pan. Bake 10 minutes. Cool.
2. Refrigerate coffee ice cream to soften slightly, 30 minutes. Quickly spread onto cooled crust and sprinkle with 2/3 cup of the toffee candy. Freeze until firm, 1 hour.
3. Refrigerate chocolate ice cream to soften slightly, 30 minutes. Quickly spread onto coffee layer and sprinkle top with broken chocolate wafers. Freeze 1 hour. Repeat, softening vanilla ice cream; spread on top of chocolate layer and sprinkle with remaining toffee candy. Cover and freeze overnight.
4. To serve, unwrap cake and refrigerate 20 minutes. Run a small sharp knife around edge of pan. Loosen side of pan and transfer cake to platter. Makes 12 servings.