Chocolate Mousse Pie

from Laura Wheeler

1 1/2 packages chocolate wafers (3 cups crumbs) (Nabisco choc wafers in yellow box)
4 oz. butter melted
1 pound bittersweet chocolate
4 cups whipping cream
2/3 cup powdered sugar
2 whole eggs
4 eggs separated

Lightly oil 10" springform pan. Press crumbs and butter into pan. Chill crust.
Melt choc in double broiler. Whip 2 cups cream with 1/3 cup powdered sugar until stiff. Take melted choc off heat and add 2 eggs and all 4 egg yolks. Fold choc and cream together.
Beat egg whites until stiff and fold into the mixture. Pour into chilled crust and chill for at least 6 hours. Whip remaining 2 cups cream and 1/3 cup powdered sugar and put on top of pie.