HEAT oven to 325°F.
MIX cookie crumbs and butter; press onto bottom of 9-inch springform pan. Bake 10 min. Meanwhile, beat next 3 ingredients with mixer until well blended. Add melted chocolate and vanilla; mix well. Add eggs, 1 at a time, mixing on low speed after each just until blended.
POUR batter over crust.
BAKE 55 min. to 1 hour or until center is almost set. Run knife around rim of pan to loosen cake; cool before removing rim. Refrigerate 4 hours. Top with powdered sugar and berries just before serving.