Chocolate Chip Cake

1 box Duncan Hines Butter Cake mix
1 up oil
ΒΌ cup water
4 eggs
1 teaspoon vanilla 
1 (6 ounce) package chocolate chips
1 (8 ounce) carton sour cream
1 (3 ounce) box instant chocolate pudding
1 cup chopped nuts

To cake mix, add remaining ingredients and nix well.  Pour into well greased bundy pan and bake at 325 degrees for 1 hour.  Turn immediately onto cake plate.  You can dust powdered sugar or drizzle melted chocolate over top.