I've added a few tutorials to show off some of the more advanced features of the action scripts when combined with the mouse interactivity.
The Simple Mouse Actions script tutorial is a small change you can make to any recorded action script to make it play back where you click in the canvas, rather than where you recorded it.
The Pointillist brush tutorial lets you turn any ArtRage tool into a pointillist tool.
And the Vine Brush tutorial is a very advanced tutorial for creating a brush that draws leaves on a vine as you draw a stroke. This isn't one for the faint-hearted, but it is a good foundation for building your own advanced action scripts.