Adobe Air is pretty cool technology. While I'm sure the technology is different, it takes widgets to the next level. I have a bunch of them and use them regularly. I actually don't use many widgets. Adobe Air is more useful to me.
Anyway, one of favorites, is Keeley Desktop. It's really a news application giving you news on sports, Page 3, and celebrity news. But, it has an additional feature of Keeley herself walking out on the desktop. Here's an example:
She does a variety of things. In one case she comes out in a trench coat. In another she writes "Get back to work" on your screen. Of course, I use it mostly for the news (cough cough).
If you're not using Abobe Air, you should. It's pretty cool. And you get to have Keeley walking out on your desktop.