Nanotechnology takes off
QUEST is a Multimedia Series Exploring Northern California Science, Environment and Nature. In their website you will find different several video and audio resources tackling different science issues, including nanotechnologies.
There are also educator guides with all the resources that relate to a particular issues and suggestions on how to use them.
Amongst the nanotechnology related resources you will find Nanotechnology Takes Off -a video introducing nanotechnologies- and Macro Concerns in a Nano World-a video that tackles ethical and safety issues related to NT.