|Driving object translation with 2D Texture.|
Use the colorAtPoint command to drive the Y translation of a grid of spheres... Or modify for your own projects.
|Painterly Rendering with Camera Projection|
This tutorials shows you how to use Camera Projections to create a painted look in your scene.
Here is a tutorial of how to set up a flexible system to make dirt sprays out of instanced poly objects. Custom attributes will allow you to easily reuse the setup in different situations.