Google is always experimenting with new features aimed at improving the search experience. Take them for a spin.
Timeline and map views
See results on a timeline or map. With the timeline and map views, Google’s technology extracts key dates and locations from select search results so you can view the information in a different dimension. Timeline and map views work best for searches related to people, companies, events and places.
Get started with one of these queries : View on time line : nanotechnologyView On Map :
pgatours------------------------------------------------------------------------------------------------Keyboard shortcuts
Navigate search results quickly and easily, minimizing use of your mouse.
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Left-hand search navigation 
Search deeper in a particular type of content—patents, products or news, for example. Google searches across all kinds of content, then ranks results by relevance.If you want to see additional results of a particular content type, just click a link in the left-hand search navigation.You can also refine your results by clicking on related search terms.
Get started with one of these queries: ipod,
beach,
airplanes------------------------------------------------------------------------------------------------
Right-hand contextual search navigation 
Similar to the left-hand search navigation, right-hand contextual search navigation allows you to search deeper in a particular type of content or to search related terms—but from the right side of the page.
Get started with one of these queries:
downtown los angeles,
python,
dancingCourtesy :
Google Experimental Labs