The News Hour with Jim Lehrer explores Wi-Fi (link should take you to streaming video link): The piece itself, several minutes long, did a good job explaining the technology to folks who may never have heard the words wireless and networking in a single sentence before, and presented a pretty accurate description of the security risks without overstating them. I think they failed to explain how businesses are well able (and will be even more able) to secure their networks, but the wardriving segment wasn't overwrought: it was what geeks do.
Thanks for pointing me to this news story. I was on the fence in regard to converting to WIFI. Now I think that I will wait a bit.