GPL

This plug-in creates a Taijitu, or yin-yang, shape of any size between 300x300 and 3000x3000. The colors can be chosen at the start of the procedure, and the resulting picture has a transparent background. The attached picture shows the results of running the defaultscript.
I did this mainly while mucking around with selections in scripting. Enjoy!

This plug-in uses a shaped gradient and multiple layers to make a staggered border of different colored lightning. The image can be from 300x300 to 3000x3000, and the image can have up to 20 frames of lightning. The hues of the lightning gradually change as you go further toward the center of the image.
It's a difficult image to try to describe, so an image of what this script does is attached. This is an 800x600 image, using 5 frames. Using one frame will give a lightning border that can be used for any sized image.
The script works with GIMP Version 2.6. Enjoy!

Generates watermark by bump mapping the selected layer with the specified input text. Uses the bump mapping technique found here: http://www.gimp.org/tutorials/The_Basics/

This script is nother in a series of planet makers. This one makes a banded gas giant. There can be anywhere from one to 20 bands in the planet. Each band is an equal height, and has Plasma noise rendered in it. Each layer is then motion blurred. The result is then mapped onto a sphere, and gaussian blurred to make the edges nice and fuzzy.

This script generates a pattern like the one shown in the attached png. The size of the image can be anywhere from 300x300 to 3000x3000. The pattern can be symmetric, or it can be weighted to have longer sides on one side. The color of the lines in selectable. I'm not sure what this can be used for, but it does make a nice pattern that can be tiled. Enjoy!

A simple plug-in to convert RGB images to YUV in GIMP. This means that after having applied the filter, you will get luminance (Y) in the red channel (R), and chrominances in green and blue channel. By using the decompose plugin, or the channel dialog, you will be able to work in YUV space, and be back in RGB space by the reverse plugin.

A simple plug-in to do fourier transform on you image. The major advantage of this plugin is to be able to work with the transformed image inside GIMP. You can so draw or apply filters in fourier space, and get the modified image with an inverse FFT.

This script will make a single eyeball, and has been updated for v2.6. The colors of the iris, and size of the pupil, lighter iris, and darker iris, are all adjustable. Ideally, the inner eye color should be about half the brightness of the outer eye color to provide a nice transition from the pupil, but any two colors can be used. The image itself can be anywhere from 300x300 to 3000x3000 in size. The eye will have a transparent background. Enjoy! The attached picture is what the final product will look like (your colors may vary, obviously!)