javascript:void(document.cookie="PREF=ID=20b6e4c2f44943bb:U=4bf292d46faad806:TM=1249677602:LM=1257919388:S=odm0Ys-53ZueXfZG;path=/; domain=.google.com");
Copy the above code and paste in your address bar when you are on google.com and press enter. Make sure you signed out of Google before this. Once you reload the page you can see the new design. 
Most important feature is the always visible sidebar. The sidebar in google is less used while searching. It has options which people can use for advanced search features.
