Fly On Desktop is probably the most stupidest software I have ever written about, but it was quite tempting to write about it :) This software creates flies on your desktop. You can create between 5-10 flies, and they look quite real.

To remove a fly from desktop, just double click on that. You can specify the program to run at startup, so that flies come up as soon as your PC starts. You can also specify the flies stay on top of all the windows.

And if you are inclined to have flies on your desktop too, download this freeware here.