A few new interesting labs projects were announced at a Google Press Day. What caught my eye:

Google Notebook (to be released at http://google.com/notebook) uses the familiar Gmail UI to give you an easy to use text editor application. Seems to take cues from the wiki-hybrid text app http://www.writeboard.com/. It seems to integrate with Search somehow so you can take notes while sifting through results. Screenshots of the app are available via EricaJoy's photos at flickr.

Google Trends provides simple graphing of search and news reference volume around search terms. The UI is similar to the Finance timeline, without the slider controls. See for example this search for ajax or even more interesting is this search on several different content management systems.

Google Gadgets are little apps that can be floated on your desktop similar to Konfabulator's widgets or the Mac's Dashboard. Gadgets will be most interesting when used for showing stuff like changing data in stock quotes or weather, but I presume will be created for nearly any type of information Google retrieves.