Schedule Once meeting planner that works directly with your Google calendar. Very similar to Doodle, but with gadget right in your Gcal. Very cool for us Google calendar lovers!!!
Didn't see much here that Google Apps couldn't do for free. With collaborative calendars, shared docs, group chat, collaborative sites that all work together, it's a pretty powerful tool. And when teachers learn to use it better, they will discover more ways to utilize it in the classroom.