Triple Chocolate Cake

1 pkg. deep chocolate cake mix
1 sm. (3 oz.) pkg instant chocolate pudding mix
1/2 c. oil
1/2 c. strong coffee, cooled
8 oz. sour cream
4 eggs
1 (12 oz.) pkg. semi-sweet chocolate chips (1-1/2 c.)
powdered sugar

Preheat oven to 350 degrees. Spray a Bundt pan with Pam. Mix all ingredients except chips and powdered sugar for 5 min. with mixer. Add chips last and stir thoroughly. Pour into pan and bake for 65 min. After cake cools and is turned onto plate, sprinkle with powdered sugar and serve.