I'm aware there has been quite a few ways of replicating this effect posted on various places and movies, but I dont think any have come as close to the original or as simple to do as those shown here: http://www.youtube.com/watch?v=S2VdozmyltE
It uses incompatible paints to create the "splatter" effect coating one over the other.
It uses incompatible paints to create the "splatter" effect coating one over the other.