UPDATE: You may have noticed that Kotaku is having problems with airing the episode. It's 30 minutes late because of a problem with their chosen video host, Viddler. Apparently, Viddler is down and the episode has been delayed a bit. You can re-watch the episode at any time at Kotaku, but I guess if they figure it out tonight they will stream the episode.
Here's a link directly to the Episode page
It seems that US viewers can now watch the Ninja Gaiden episode of Retro Game Master, however, Canadian and Mexican users are still experiencing troubles. Kotaku is working to fix that issue for us.