Mix crumbs and butter; press onto bottom of 9-inch springform pan.
Beat cream cheese, sugar and vanilla in large bowl with mixer until well blended. Add eggs, one at a time, mixing on low speed after each one until just blended. Pour over crust.
Bake 40-45 minutes or until center is almost set. Run knife around rim of pan to loosen cake; cool before removing rim. Refrigerate 4 hours. Spread caramel topping over cheesecake just before serving. Garnish with chopped chocolate.