This is a compilation of some wonderfull scripts of Iccii and some other scripts I 've made myself, all brought together is one script-fu file to make the installation very simple.
Contains : Cartoon, Color pencil, Conte crayon, Cutout, Drawing, Inkpen, Note Paper, Paint dot image, Palette knife, Pastel, Stamp, Water paint effect, (plastic) Wrap effect. Angled strokes, Crosshatched, Chrome image, Cross light, Funky color, Soft focus, Solarisation, Brick wall, Patchwork, Stained glass, Texturizer, High pass, Scroll, ...
Examples on the homepage. http://users.telenet.be/ev1/gimpphotoeffects_en.html
Use the latest version on GIMP 2.4