In case of Vladimir Putin, Google added results from Google News, Google News Archives and Google Blog Search - all on the main Google search page.

Currently, the website thumbnails are displayed only for the Google News results placed after the top three organic search results.
Hope it's just a temporary experiment else it may bring some bad news for regular web sites that are also displayed in the organic results - thumbnails will help draw the attention of search engine users and may alter the traffic on regular websites that are display in Google Search results sans the thumbnail.
Reader Comments
Use the GooglePreview extension, it shows previews of each search result. It's been around for over an year now so Google hasn't done something new, for a change :)
Written on 27/4/07 2:03 AM
google preview extension is even better.
Written on 28/4/07 11:53 AM