The Google Docs document list now allows users to create hierarchical folder structures and share single or multiple documents right from the document list.

Editions impacted:
Standard, Premier, Education and Partner Editions

Languages impacted:
US English

How to access what's new:
Sign in to Google Docs, create folders and drag one folder into another to create nested folders. Click the check box next to multiple docs and the click the 'Share' button to share several docs all at once.

For more information:
http://www.google.com/a/help/intl/en/users/dands.html