For a quick weather forecast, type: weather 56252

To find out the Celsius equivalent of 60° Fahrenheit, type: convert 60 F to C

To look up a phone number or area code, type: 5553911515 or 501

Math problem…who needs a calculator: 6.89 * (300+653)

The above is just a sample to show that Google and Yahoo! can be used for more than just to search for web site pages. Use them to search for answers!

Hints and cheat sheets that will show you how to search more efficiently and use these extra tools are referenced below:
http://tools.search.yahoo.com/shortcuts/
http://www.google.com/help/features.html
http://www.google.com/help/cheatsheet.html