Geek Image lets you see any image from the Web you want, periodically refreshing it. Great for webcams or for keeping an eye on a dynamically generated graph. Inspired by GeekTool, but runs in the Dashboard, not in the desktop.
What's new in Geek Image
Optionally shows a spinner while loading images.
Now works on Mac OS X 10.5. (Many thanks to Jim Waters for debugging this and providing a patch.)