This is a script that is based on the lightning tutorial (http://gug.sunsite.dk/tutorials/tomcat9/). It was tested on GIMP 2.4 (so, using the new scheme engine).
It comes with two versions; one that creates an image of lightning and another that creates an animation (using layers as frames) of lightning with parameters to modify the turbulence so the lightning bolt appears to dissipate over time.
Pandora simplifies the process of stitching together a sequence of panorama images.
Load all the panorama pieces (in order) as layers inside an image (suggestion: make a new image then "Open as Layers" and select all the files). Then run Filters->Combine->Make Panorama.
You still have to do the detailed matching by hand, but Pandora calculates the needed image size, moves all the layers to approximately the right position and creates appropriate layer masks for fading each image into the next.
A script to create a border around an image. Border can contains additional lines (inner and outer). Size of lines and distance to image/border can be set independently. The bottom border can be extended and can contains text. There is no auto extension according to text size. The text is always in the middle of the bottom border.
(based on Eg-Border.scm script)
NOTE: I've created a new version in python and this version have much more functionality and uses own dialog, so it fits to screen ;-) Check it at: http://registry.gimp.org/node/24784.
This plugin does a pretty good job of eliminating shadows and highlights in photographs. It gives you two layers that basically act like adjustment layers, and changing the opacity will alter the effect.