OK so this is funny. Follow the link and take a look at FakeCall. I need one of these for the PPC-6601. :)
Canal PDA's original article about the most bizarre Palm OS applications was so popular that they translated it into my harsh, guttural language for my edification. Then, using a series of hand signals, I was able to communicate that they should probably go ahead and translate it into English, since that's what most of our other, non-binary readers prefer. Thank the random seed they did—who wouldn't want to live in a world where someone programmed a Bubble Wrap Emulator?
What's the weirdest bit of software engineering you've ever seen (or used) on a mobile platform that didn't run Palm OS?