Five minute videos explaining how to use specific tools in a classroom setting. It's a great first stop if you haven't used a tool or want to hear from an educator about how it could be used in a classroom.
Sketchup in the classroom. Just 5 min video - take a look. HISTORY focus, maps, geography, street view, building 3d models. (Mike - really, take a look). Also, 5-8th grade tech-ed / design class (this one is someone from Maine - Keith Kelley - who is an amazing teacher). It's amazing what these kids can do.
This is a great resource for those interested in American History. There are many movies here that are great to watch, simply because of how long ago they were made.