Google Labs has produced a special version of the Google front page as a homage to OS X.

The page is fully usable. Take a look at GoogleX to have a go yourself.

Amongst other cool stuff that the labs are working on, if you live in the US or Canada, take a look at Google Maps for a very nice browser based map and directions tool.

Update: It seems like Google have taken down the page. 🙁 (See this What Happened to Google’s OS X Homage discussion)

Anyway, to make up for the lack of the original page, a number of mirrors have popped up.

http://www.theplaceforitall.com/googlex/
http://dinkdoink.com/me/googlex/
http://home.comcast.net/~rymcvpics/googlex.htm
http://googlex.foxified.info/

Thanks to Scobleizer for the list of links.

There is also an article that includes comments from the original programmer at Google here.