Let the ice cream thaw slightly on the counter for 5-7 minutes. Once the ice cream is slightly soft, pour the ice cream into the Oreo cookie crust (or make your own Oreo cookie crust). Spread the ice cream to all sides of the pie. Put the pie into the freezer until you are ready to eat (at least 1-2 hours). When you are about ready to serve the pie, whip the whipping cream in a bowl until stiff peaks form. Add the powdered sugar to the whipping cream. Crush the candycanes in a Ziploc bag into small pieces. Warm the hot fudge sauce in the microwave for 30 seconds, or until smooth and easy to drizzle. When ready to eat the pie, remove from the freezer. Top the pie with the whipped topping. Sprinkle the candy cane pieces on top of the pie. Drizzle the pie with the hot fudge sauce and then serve.