DepthBrush!

[Spencer Lindsay]

What an amazingly twisted tool!

Much better than a lava lamp!

Spence.

PS. Sorry,... late here (for me).

[davey]

It's one of my favorites, too.

Did you also know you can select the DepthBrush, change the Stroke type to DragRect, and then move, rotate, and resize your applied stroke (not to mention changing textures and alphas on the fly)?

Try it if you haven't already.
dave