People at Google must love being able to experiment with the medium. Webgraphics pointed to the new GoogleViewer that is appearing in the labs, which takes your search results and presents each hit (each external URL) in a viewing pane, so you can view each page within Google before going out to the search result page. It's similar to a slide show. I've seen something similar to this with a CMS' search system that shows previews of Office and PDF files, but didn't expect a search engine to do this web pages.