
- Activate Dashboard by pressing F12 (or whatever key you've assigned to Dashboard).
- Begin dragging the widget.
- Press F12 again, before letting up on the mouse button.
- Drop the widget wherever you want it.
[robg adds: This isn't really a hidden hack; it's the official way of working on a widget before it's done. However, I find it extremely useful -- there are certain widgets that you'd just rather see and use all the time, instead of only in Dashboard mode. Note that the widgets float above all windows, so this trick is most useful if you have some spare desktop space. To disable this mode, repeat the above command, but replace YES with NO, and then logout/login again. Note that you can also restart the Dock to make the changes take effect (the Dock controls the Dashboard).]