There's a new version of the Gimp out.
Version 2.0 Stable:
http://www2.arnes.si/~sopjsimo/gimp/stable.html
For those of you that don't know what the Gimp is, its an open source clone of photoshop with very powerfull scripting in combination with filters
GTK is required for the install, which is also present on the download page.