You may already have an assortment of widgets on your computer... small applications for Konfabulator or the Macintosh Dashboard. My new favorite is the RestaurantRatingz widget, which lets you quickly look up ratings and reviews for local restuarants. True, the reviews are already available on the RestaurantRatingz.com website, but when I am working in my web browser, I don't like to open a lot of extra windows. Somehow the widget just seems more convenient, and I suspect I will use it more often.
The widget was developed by Intertron Software, and you can download it from their website at www.inertron.com/widgets/.