Chocolate Orange Supreme Cheesecake

------------------------------------BASE------------------------------------ 1 c Chocolate wafer crumbs

1/4 t Cinnamon

3 T Margarine, melted

------------------------------------BODY------------------------------------ 4 pk 8-ounce cream cheese, soften

3/4 c Sugar

4 ea Eggs

1/2 c Sour cream

1 t Vanilla

1/2 c Semi-sweet chocolate pieces,

2 T Orange flavored liqueur

1/2 t Grated orange peel

BASE: Combine crumbs, cinnamon and margarine; press onto bottom of 9-inch springform pan. Bake at 325, 10 minutes.

BODY: Combine cream cheese and sugar, mixing at medium speed on electric mixer until well blended. Add eggs, one at a time, mixing well after each addition. Blend in sour cream and vanilla. Blend chocolate into 3 cups batter; blend liqueur and peel into remaining batter. Pour chocolate batter over crust. Bake at 350, 30 minutes. Reduce oven temperature to 325. Spoon remaining batter over chocolate layer; continue baking 30 minutes. Loosen cake from rim of pan; cool before removing rim of pan. Chill. Garnish with chocolate curls, if desired.