Multiple Instances of Dashboard Elements
One of those “Hey that’s really cool!” things you discover by accident:
You can have multiple instances of any given dashboard widget in OS X 10.4 (Tiger). All you do is open up the area where you load widgets (by clicking the “+” icon in the lower left corner of your screen) and click on the widget you want to load as many times as you want it to run.
I’ve done my “world clocks” that I used to have on my wall in the instance on the left. Quite handy when phoning friends around the globe.