Apple logo -> About this mac.
Just open up Terminal and type "defaults write com.apple.dashboard devmode YES" (without the quotes). After you logout and log back in you can drag a widget from the Dashboard by pressing F12 while dragging. It should stay on your desktop full time, which comes in handy for that Midnight widget among other things.
Think you are refering to GeekTool (http://projects.tynsoe.org/en/geektool/) right?