Back in in my nineties day job using Windows '95, one of my favorite things of the OS was a screensaver, I think it was called Vortex, but I'm not sure. It froze an image of whatever you had on your screen, windows and all, and then it animated it with a sort of vortex which swirled around on the screen. It was beautiful, and I think it's amazing it could be done with a friggin' 486 computer.
I liked particularly to run it with the Gogh Starry Night painting, because the vortices fit well with those in the sky. Below is a screenshot (well, looks like several combined) of the screensaver running, which I made back then.
Hmm, I can see the screenshot is actually taken on my Mac back then, so this means it might be from 2000, and that I had managed to find a Mac OS 8 equivalent.
Anyway, I'd be grateful if anybody can find such a screensaver for me, either for Mac OS X (Snow Leopard) or Windows (Win7).