superchunk on 12 December 2012
Its a Google issue and will hopefully be fixed soon. Has to do with HTML5 vs Flash and for some reason the recent update to Youtube has been serving flash videos to WiiUs browser. There is a work-around though. Part of the url will have "watch?v=". Replace this with "embed/" and the video will still work as before, even being able to hand off to TV and continue to browse.
