I really love the way that Google is showing you a preview of the web page from the search result. When you search on Google and you see a result just hover your pointer over the result and up pops a preview of the web page. I think that is a great way to preview the site that you will visit when you click. This is just one of the many reasons that you will want to have a great branded web presence.
All this goodness may have flaw built into it. It seems that according to some websites the live previews are skewing Google Analytics because every time someone hovers over the site it counts as a visit. If you head over to Search Engine Roundtable they offer some solutions on how to get things back on track.
I think that overall the live previews in Google Search is a fabulous new tool.