Uruguay’s Plan Ceibal has a group of teachers and students that have been subtitling and using Khan Academy videos in Spanish over the past year. You can see some of the resulting videos here.
Sam Seidenburg has some suggestions about how we can improve learning with such videos: writing Activities that could be written to support math tutorial and physics tutorial work, or making similar format videos to help people get started with eToys.
Neil Dsouza at teachaclass.org has offered to help anyone who wants to start using Khan Academy videos in their classes.