Google has released several new applications for educators (all free):

Google Apps for Education(including Google Docs)
"Google Apps for Education is a broad IT solution that schools can use to bring communication and collaboration tools to the entire academic community for free. Google manages all the technology details, so you can focus your time, energy and budgets on teaching your kids."

Google Teacher Center
"Google and teachers have a similar objective: to help people build knowledge by providing greater access to useful information." Includes a mailing list you can sign up for.

The Literacy Project:
"A resource for teachers, literacy organisations and anyone interested in reading and education, created in collaboration with LitCam, Google, and UNESCO's Institute for Lifelong Learning."