Norsemen was filmed simultaneously in Norwegian and English (the actors did each scene in one language and then the other). That way Norwegian audiences can enjoy this expensive-to-make show in their native tongue, and it can also gain widespread popularity in the much larger English-speaking world (which pays the bills).
I recently read that Hinterland (aka Y Gwyll) did the same with Welsh and English.
Anyhow, is there a name for this technique of producing a show in multiple languages simultaneously? Any other examples of it? It seems like a good idea for producing high-quality content in languages that otherwise wouldn't necessarily attract that level of investment.