Two interesting Konfabulator widgets
by Volker Weber

GrabGlobIP displays your current IP on the internet, not the one assigned to you by your local network, but the global IP assigned to your firewall or NAT router.
kSnoop shows a list of currently available wireless networks along with signal strength and other status. Can display a pop-up when open networks are seen.
Comments
I have been playing with Konfabulator, I wrote a couple of widgets that work with Domino. I would be quite interested to know if they work on the Mac, I think they might do. The first one is easy, it displays recent mails:
Dominux Mail Monitor
the second will display pretty much anything if you configure it right:
Dominux Domino Document Desktop Displayer
have fun,
Alan.

