Google Releases Desktop 2

The big difference in this new version is a sidebarwhich goes on the side of your desktop and gives you access to your Gmail, news, weather, photos (not from Picasa, but folders and RSS feeds), stock quotes, RSS headlines (or Web Clips), a Scratch Pad (for quick note-taking) and a Quick View list for web pages and files you
use often.

http://desktop.google.com/