YAMT, Yet Another Mac Tip
Browsing MacUpdate late last night for some universal binary goodies, I ran across a rather neat application. Bye Bye Dashboard lets you disable the dashboard, which is notorious for being a system resources hog. I can see this type of thing coming in handy for the IT guy that wants to make all the Macs he rolls out as efficient as possible. A company boss might also find this handy to get rid of time-wasters like my favorite Sudoku widget.
For whatever reason you might want to disable the dashboard, whether it be productivity or performance, this is the only application I've heard of that can do that. And for those times when you need to take a break with a widget or two, Bye Bye Dashboard does let you enable the dashboard, it's by no means a permanent solution.