Just saw a wildlife show on my local PBS station (well, one of them) that was produced both by Chileans and Canadians. The entire narration used SI. I was curious because the narrator had a North American accent (rather than Australian, New Zealander, or British) so at first I was wondering if I was seeing a breakthrough in US television production. Not the case as it turns out. And the show was released back in 1996!
Oh, well -- a ray of sunshine, I suppose ... Ezra