Well maybe not everything but I sure use it alot
Even my old work has benefitted.
One of the features i've found pretty handy is the Import Image. I've used that to help touch up some of my old work with splendid results. For instance I had an old painting I did back in hi school. It was pretty beat up so I cleaned it up and scanned it in. Then I opened it up in AR and went to work to restore the image. I had some prints made up and you can't even tell where it was touched up.