This plugin fakes some kind of DRI effect by enchancing the dark parts of a picture and reducing the light parts. After that procedure it enhances the contrast by using the unsharp masking filter.
Because GIMP has no action recorder till now, i wrote this as a simple batch in python ;-).
I hope, you're like this little thing.
Tested with GIMP 2.6.x. Should be fine in 2.4.x too.