I work at a University that is on Google Apps for EDU, and being able to automatically populate students, staff, and faculty in circles based on class, section of a class, dorm, fraternity/sorority, student org, admin department, is gonna be HUGE. Now if they'd just hand us the keys to that one. Couple that with Sites, you could even go as far (dare! dare!) to slay the behemoth of Blackboard. Save your homework as a Doc in Google Docs and share with the professor. Circles and hangouts for discussions and class assignments for off campus students. It's gonna BLOW UP, and that's the one thing that the main stream media, the tech pundits, and even you +Robert Scoble
haven't hit on yet. Education is gonna devour this. I'm ready.