The video is about 45 minutes long and covers practical K-12 examples from our district and others covering uses for Gmail, Google Calendar, Documents, Spreadsheets, Presentations, Forms, Sites, and more. Examples will include student collaboration, paperless classrooms, parent surveys, class and activity websites and blogs, electronic portfolios, role-playing projects, shared calendars, Parent-Teacher conference scheduling, resource signup, homework calendars, shared resource repositories, improved writing revision for students, tracking inventory, self-grading quizzes, increased communication, data collection, and more.

From: http://www.youtube.com/watch?v=NVInZwfvmbU

Additional resources: Here is the Google Presentation from the session - A Gaggle of Uses for Google Apps