A popular blog Google Blogoscoped suggests new "Onebox" searches to Google. “Onebox” is an instant result on top of Google’s organic search result. For example, when you enter weather ny, Google shows you the current New York weather without you having to leave the results page.
Some of the suggestions are quite interesting like: Whois queries* ( domain registration) and
Chat with a Googler ( chat with Google). Click here to check them all: http://blog.outer-court.com/archive/2006-06-12-n85.html
Source: Google Blogoscoped