Here are some scripts from my scripts directory, which happened to be fixed for 2.8, either because I needed them or out of curiosity. They may be backward incompatible with 2.6. If I did the work before the authors, they can receive their good back here. I updated this package on 2012/09/09, adding some other great scripts I use daily.
The Orton Effect is a combination of Orton Effect by Julia Jomantaite and other Orton effect scripts - with changes of my own. JP-Borders was written by J-P Sutto and me. Tuxcomputers split-tone with edge detection can do a classical split tone easily configurable or, if "Edge Detection" is checked, a different but very interesting effect.
I did not modify "my" version of Serge Mankovski's B/W Film Simulation, with a new option, "Add grain", which calls "my" version of Elsamuko grain (I hope you'll forgive me, Elsamuko, for having snooped your code and added some options I needed), and will not work with the original script except if you modify 19 lines :(( But maybe the grain is too big for some "simulations" of high speed films.
Some of them previously modified by me, or completely altered.