Combine Chocolate Milk And Cinnamon In A Sauce Pan. Stir Over Low Heat Until Smooth And Shiny; Reserve About 1/2 Cup For Later. In A Alrge Bowl Combine Wafers Crumbs, Marshmallow And Sugar. Stir In Chocolate Mixture. Blend Well. Press Into A Lightly Buttered 8" Pan. Spread Remaining Chocolate Mixture Over The Top. Chill For 1 Hour Before Serving.