Spray crock pot with non-stick cooking spray or lightly grease.
Mix cake mix, sour cream, pudding mix, chocolate chips, oil, eggs and water in bowl by hand.
Pour into crock pot. Cover and cook on Low 6 to 8 hours or on High 3 to 4 hours.
Serve hot or warm with ice cream and/or whipped cream topping. I like to put 1 or 2 scoops of ice cream on top. Top the ice cream with whipped cream and then drizzle chocolate syrup over all.