I have really grabbed a huge amount of shell scripts in the past two days and I’ll give you here my experience on Geektool (with all my grabbed scripts).
What it’s GeekTool
It’s actually a preference panel and creates a layer over the desktop which can be utilized to place picture, text file and shell script output. Most of the people use the last one (shell script output) to monitor their system like cpu hogger, etc
How to install?
Follow the link here and it gives you excellent screenshot tour
Here’s my screenshot
Click here to see more information of the Screen shot