Saw part of a PBS show called "Hemisphere South" on our local affiliate KCSM. Couldn't find any more info about it either on their web site or the main PBS web site (and I didn't watch the whole thing so I missed the closing credits to see who produced it). The topic was the history of the inhabitants of Easter Island.
The story is pretty interesting in and of itself (and the cruelty of the European imperalists -- what else is new?). What caught my ear while looking at the show was that ALL of the distances were given in SI only. I was intrigued because the narrator had an American accent, so I assumed the show was not produced by the British (who might have used "miles" anyway since the distances I heard in the narration involved "kilometers"). A very pleasant surprise. Sorry I don't have any follow up information to add. Ezra