This looks like another quality mashup - one of the things which you think, "Hey... Why didn't I think of that?"
I won't stop using the dropdown to search geographically, but I'll definitely be bookmarking the Infographics site - and possibly using that as a gateway into various NV stories.
I realise Mike's already blogged about this (yesterday, I believe?), but I read about this on the Google Maps Mania blog. Worth a seed!