I've written about Konfabulator before, but I just snagged the Windows version of Konfabulator and I have to say how freakin' cool it is. It's like functional eye-candy. The app itself sits in the task-tray and all the pre-installed desktop widgets all look fantastic and do very cool stuff. I particularly like the calendar and photo album widgets, though some of the other applets are cool as well. It's amazing to me that years after Active Desktop, a company can come along and show how to take a basic concept of desktop widgets and do it right.
Wow, very neat. Inspiring.