but i have to say these these 3d desktop things look MIND-BOGGLINGLY HORRIBLE to actually use.
writing notes on the back of a window - HAHAHAHAHAHAHHAHAH - that has to be the stupidist user interface concept ever to actually get implemented. if that's a good idea, i have a better one for them, how about you push a button and a little animated dog comes on the screen, then you zoom in and use your handwriting tablet to write a note on a biscuit, and feed the biscuit to the dog who eats it. then, when you're using an app and want to see any notes you made about the app, you blow a whistle into the microphone, and the dog will come running (in 3d of course), then you have to feed him some special medecine, which will make him go to the bathroom. he will do his business on each window, with the proper note being defecated on each window. better yet, make him do his business on the back of each window, which you can tehn rotate in 3d to see it.