Sure. There are a number of other countries, perhaps not quite as close to us, so that we don't work with them quite as frequently. Brazil is significant. All of the Scandinavian countries are very advanced in terms of open data. Australia and New Zealand are also active in open data, and in open government in general.
As Corinne mentioned, there are almost 70 countries now that are formal members of the Open Government Partnership. Most of those countries would have specific open data initiatives as part of their open government action plans.
I should also mention that some of the really advanced open data work is at the subnational level, so in the United States, for example, at the state level, and here at the provincial level. That holds true within some other jurisdictions as well, such as Australia.