Combine graham cracker crumbs, 3/4 cup pecans, and butter. Press into bottom of a 10-inch springform pan.
Beat cream cheese at medium speed with an electric mixer until smooth. Add sugars, beating until blended. Add eggs, 1 at a time, beating well after each addition. Add vanilla, beating just until blended. Pour mixture into prepared pan. Bake at 325° for 55 minutes or until almost set. Turn oven off, and partially open door; leave cheesecake in oven 1 hour.
Remove cheesecake from oven; cool in pan on a wire rack 30 minutes. Cover and chill 8 hours. Run a knife around edges of pan, and release sides.
Sprinkle cake with 1/4 cup brown sugar. Broil 5 1/2 inches from heat 2 to 4 minutes or until sugar begins to melt. Sprinkle with 1/4 cup pecans. Store in refrigerator.