After minimizing my browser window I noticed that the deskscapes background had paused. Usually it restarts after a few seconds but not this time. I selected another wallpaper and suddenly both were active at the same time. I clicked a third one and all three were displayed. A reboot cleared up the problem but I'm thinking, with the right combination, overlaid animated wallpapers would look cool, if a little hard on the CPU.
It will probably never happen again but ...
It will probably never happen again but ...