The iMac operating system (Mac OS X Snow Leopard) comes with a very useful and fun little application called Dashboard. With a single click it brings up utilities (widgets) on your desktop for as long as you need it, then hides them again. It comes with some widgets preconfigured such as a calculator, clock, iCal (today's date) and the weather forecast. A little exploration and you'll find a surplus of widgets for download. Here are some of the top ones
A new social networking widget that checks your facebook.com account for any new Messages.
Automatically logs you into your Facebook.com and checks your Message Box and Poke status.
If any new messages are found, they are retrieved and displayed inside your widget for quick, easy viewing.
Your log-in information is stored inside the widget so you can quickly check without typing another password again!
Play snake and discover Whosegame, a site of independent video games.
Shows lyrics for current playing song on iTunes.
Apple.com Daily Special
Apple.com Daily Special is a Dashboard widget that displays the hugely-discounted products from Apple's online store are temporarily made available until they sell out. This widget displays the day's current-selling "hot deals".
Features include automatically updated exchange rates, support all the traded currencies of the world, support the old legacy european currencies (like italian lira, deutsch mark, french francs) and much, much more.
The Weather Channel
Includes current weather conditions, 36-hour forecast, severe weather alert information and regional radar map.
Alert for Facebook for iPhone, iPod touch or iPad
Alert for Facebook is a friendly and interactive Facebook application that lets you easily organize your favorite Facebook Pages according to your interests and passions. Alert is interactive, so you can easily like, comment about and share content from your favorite Pages to keep your social network informed.
The widget is basically a modified version of the Apple provided Stickies. However, this widget allows you to create new sticky notes directly from existing stickies.
Do you ask yourself sometimes, where in the world is this country? This widget shows each country of the world on the map. Either select it from the list or jump around randomly.
Translates any text between different languages using Googles language translation service. It can even detect the source language.
Set date and time of the event and it shows the time left. In addition to single events the counter can be repeated daily, weekly, monthy or yearly which advances automatically when the alert goes off. It's the perfect widget for reminders on single events, lunchbreaks, weekends, paying your monthly bills or birthdays and holidays.