Geektool 3

I love to spruce up my shell scripts by creating images out of them e.g. creating a bar of variable length depending on processor/memory usage. Right now, I need to run a local webserver containing my scripts and then access them using a URL for the image geeklet. This also creates problems if I want to use something like applescript, since the web server is run as a different user and can't access my GUI applications.

It would be extremely helpful if the image geeklet could execute a script that generates the image file. The only other option right now is to have a separate script that updates the image periodically, but having to run 2 geeklets is suboptimal.