So I've been playing a bit with Google docs in a few classes...
1) Grade 8s. A communal document for review... I distributed review questions to each student and they wrote out the solutions in OneNote and clipped them into our Google Doc for everyone to see. I used the comment tool to mark it up.
I could have used a wiki, but havent finished the setup yet. Small steps with my kids. But our IT director has made a public statement that we can start using other resources and we're not tied to the (lamentable) Sharepoint.
2) The aforementioned Sharepoint will not allow us to synchronize OneNote notebooks (for reasons no one can figure out) so in order to look at their homework electronically, I had my AP Calculus students clip their hw into a Google Doc. One concerns... it's not a click-click exercise since Google Docs don't allow access to the clipboard. The Grade 8s mentioned this as well. *I should try this with Zoho to see if that'll work!
I've also set up Google Latitude... waiting to see if I have a stalker! :)