Been watching this DVD set called Chinese Restaurants. It's by a Canadian Chinese (from Singapore) who goes around the world looking for Chinese restaurants in different countries. When he finds one he interviews the owner and talks to them about how they get to where they are, etc. It's more a Chinese diaspora thing than a food thing. But it's very interesting. So far I have seen episodes of South Africa, Mauritian Island, and Cuba.
If you are interested just pluck "DVD, Chinese restaurants" into a search engine.