GoogleBing. BingGoogle?

I knew that there would be something along these lines, though I couldn't find it yesterday:
http://www.blackdog.ie/google-bing/search.php
It's a split screen that allows you to input your search at the top of the page and see the results from both Google and Bing in twin panes lower down on the page. It's kind of interesting, and the more complicated your search is, the more you can make the results diverge...