Ninetendo are apparently launching a Video On Demand system for the Wii. Details are sketchy at the moment, but it seems the new system will allow Wii owners to download the videos to their Ninetendo DS as well, so if they are watching (say) a movie, they can download it to their DS and watch it outside.
There doesn't seem to be any other details such as content or release dates though..
http://www.digitalspy.co.uk/gaming/a...d-service.html