Grease a 9" spring form pan. Sprinkle sides with 2 tbsp crumbs. Mix remaining crumbs with butter and sugar. Pack firmly into bottom of pan. Soften cream cheese. Beat until fluffy. Gradually beat in sugar. Add eggs, one at a time. Beat; fold in vanilla and sour cream. Bake 375 for 30 minutes or until gold color. Turn off oven and leave one hour. Chill.