World Builder does animations with wind blowing through the trees and grass. You can drop things into the water and it will make the water ripple in rings. It has animated ocean waves that have that thin foamy slice of water that slides back off the shore into the ocean after the wave recedes. Rivers that have rocks sticking up out of them, leave a rippling wake on the down stream side of the rocks. Animated wakes that you can use on boats, etc. You can "float" things in the water and they'll move down stream with the current. The caustics that can be applied to the animated water, looks SO real it will make you drool.