Preheat oven to 350. In a large mixing bowl, combine the cake and pudding mixes, eggs, water and oil. Beat until well mixed. Fold in poppy seeds. Pour into two greased 9 x 5 x 3 inch loaf pans. Bake for 35-40 minutes or until a toothpick inserted near the center comes out clean. Cool in pans for 10 minutes before removing to a wire rack.