The+Mac+Dashboard

Here's a quick look at the cool things you can do with dashboard.
== Mac OS X features Dashboard, a semi-transparent layer that floats above your desktop at the press of a key, and provides access to several fun and functional, mini applications called widgets.==

You can open the dashboard by clicking on the icon on your dock or pressing the F12 key.
==A default set of widgets appears. You can move the widgets anywhere you want by simply dragging them, click and hold your mouse button on a widget and move your mouse—or finger, if you're using a trackpad.==