Google is now testing real time results on the their search results pages; the discovery was made by SEO consultant Rob Ousbey. Ousbey recorded the live real time results as he typed in the search queries live in the Google search box, as you can see in this video.
http://www.youtube.com/watch?v=Ty71OxyQKKc
Official word from Google confirmed that they are in fact testing real time results pages, however they are doing so on limited accounts, it is not yet known if this will role out across all results. Look out for more information on real time results and the impact for Search Engine Optimisation and Pay-Per-Click.