Grain Surgery is a wonder (I hold it in as high esteem as I do the gift from the gods the MIGHTY "Healing Brush". :) One of the really great things about Grain Surgery is that it actually has 3 seperate uses. The one it's most often used for is the removal or minimization of grain. But like Alpha says above, it can also add grain (you can choose grain templates - ie. Tri-X 100, Tri-X 400, etc.). The third is the one that I just love the sound of (but haven't used yet), you can actually input an image into it with grain that you like and it will sample/analyze the grain structure and then attempt to replicate the look of that grain onto a 2nd image. The grain aliasing issue is still a current one. There is a recent (6 months or less) article on it that I read about 2 week ago. I'll see if I can find that link somewhere. -=>Donald