In a small bowl, combine cookie crumbs and sugar; stir in butter. Press onto the bottom and 1 in. up the sides of a greased 9-in. springform pan. Place pan on a baking sheet; set aside. , In a large bowl, beat cream cheese and sugar until smooth. Beat in sour cream and vanilla. Add eggs; beat on low speed just until combined. Pour over crust; set aside. , In another bowl, cream butter and sugars until light and fluffy, 5-7 minutes. Add water and vanilla. Gradually add flour and mix well. Stir in 1 cup chocolate chips. , Drop dough by teaspoonfuls over filling, gently pushing dough below surface (dough should be completely covered by filling). Place pan on a baking sheet., Bake at 350° for 45-55 minutes or until center is almost set. Cool on a wire rack for 10 minutes. Carefully run a knife around edge of pan to loosen; cool 1 hour longer. Refrigerate overnight., Remove sides of pan. Sprinkle with remaining chips. Refrigerate leftovers.