For the Chocolate Glaze: Set cooled cake on a plate. On top of a double boiler, combine heavy cream and chocolate. Heat, stirring frequently, until melted. Allow to cool for two minutes. Stir in vanilla extract. Pour chocolate glaze evenly over cake. Allow to set for 15 minutes before serving.
For the Orange Glaze: Set cooled cake on a plate. In a small bowl, combine powdered sugar, water, and vanilla extract. Stir with a fork until smooth. Icing should be thick but pourable; if the icing is too thick, add a little more water. Pour icing evenly over the cake and allow to set for 15 minutes before serving.