Google - The Untold Function

Maybe you might know, but this is really cool. To get an answer in just one search & need not waste time searching through all the complicated sites. Google is all you need.

Stuff about Google which you should know about but did not:
1. Currency convertor
- In the search field, just enter to and click on Search
e.g. 100 SGD to USD

2. Weather forecast
- In the search field just enter weather and click on Search
e.g. weather Singapore

3. World Clock
- In the search field just enter time and click on Search
e.g. time London

4. Package tracker (for UPS/Fedex)
- In the search field just enter and click on Search
e.g. 9101150134711320079261

There are still more cool features, do you know any of them?