Goosh - the unofficial Google shell is easily one of the coolest things I have seen on the net since hobix’s try ruby! (in your browser). Goosh takes all of Google’s tools and retrofits them into an interactive shell. Using AJAX, Goosh really makes you feel like you are working in a *nix shell. Some features include, searching Google (Images, Translate, Videos, News, and Feeds) to name a few. You can even search Wikipedia! Currently it is available in English and Spanish and I presume it will auto-detect your language based on your system preferences. Probably the closest we will get to a Google OS right now. Check out the screenshot below.
who's sayin' what?