Demonstration of the 'live' command for Ubiquity. To install Ubiquity: http://labs.mozilla.com/2008/08/introducing-ubiquity/
To install this command (once Ubiquity is installed): http://www.powerset.com
'live [search terms]' will pull back web, image and xrank results as you type. Pressing enter will open a new tab with the results. 'live images [search terms]' will limit it to just image results - the same goes for web and xrank.