Here is another search results interface, this one is from Microsoft Bing. Bing is testing that when you overlay your mouse cursor over a snippet, it protrudes the background of the snippet, making it boxed it, and embossed in the search results page. Frank Sandtmann sent me this GIF to share with you all.
I personally cannot replicate this but Frank is and he said Bing is testing shadowed boxes around the search results on the search results page for mouseover.
I am not sure if I like it or not.
Forum discussion at Twitter.