Animated Gimp brushes

[torstan]

There have been a few posts recently about creating animated brushes in Gimp. I thought it would be handy to have them all in one thread. If people could post an example of what the brush does and then the brush itself that would be great!

I'll start with a small conifer brush that I created a while ago. Here's an example:


and here's the brush:
trees.zip