The videos from the ESRI International User Conference plenary session are on:

 
My personal favorites are the GIS In Education segment (where you can see 2 awesome students from Maryland, their teacher, their Geomentor, and our colleague Charlie Fitzpatrick), and Dr Smits presentation about the palm oil plantation situation in Borneo, but there are *many* other gems here that you could use for teaching about geotechnologies and society.
 
One more video on GIS in education:  During a recent GSDI conference in Rotterdam there was a youth day, which included a demo by students about school routing and how there might be dangerous points of traffic along the route:
 
 
Near the end they say they want to start a company like Google or Microsoft when they are older. I don’t doubt for an instant that they could do it!
 
–Joseph Kerski