1 1/4 c  Chocolate wafers, crushed

    1/8 ts Cinnamon

      1 pk Light cream cheese (8 oz)

      1 c  Sugar

      1 c  Unsweetened cocoa powder

      1 ts Cocoa powder for garnish

  2 1/2 c  Sour cream

      2    Eggs

      2 T  Coffee liqueur

      1 ts Vanilla

  Preheat oven to 350F.  Stir together wafer crumbs and cinnamon. Pat into
  bottom of 9-inch springform pan.
  Beat cream cheese until light and fluffy.  Beat in sugar and cocoa powder.
  Beat in egg.  Stir in 2 cups sour cream, coffee liqueur and vanilla. Turn
  into prepared pan. Bake for 30 minutes or until set.
  Spread remaining sour cream evenly over top.  Return to oven 1 minute to
  glaze top.  Cool to room temperature, then chill thoroughly, covered.
  Remove from springform pan. Just before serving, dust top with cocoa
  powder.