A wishlist... I can relate to that!
* Edge F/X, Dream Suites I, II (AutoF/X)
* Etchtone, Cutline, Screens, Shadows (Andromeda)
* Deep Paint (Right Hemisphere) - spendy, but artsy
* Old Movie (VanDerLee) - best of it's kind
* Puzzle Pro (A.V. Bros.)
* BuzzPro (Fo2Pix) - one of my favorites
* Convert to BW Pro (Digital Imaging Tools) - like channel mixer/monochrome on steroids
* India Ink, Mr. Contrast (Flaming Pear)
* Pan Engraver (Panopticum)
Free off the net...
* Polaroid Dust and Scratches
* Eliminate White
* Eliminate Black
* Paint Engine (Fantastic Machines) - but you know about this one already!
Hope this helps...
~DannyR~