I forgot to mention that last week's episodes were the first ones that aired after they skipped a week for the earthquake and tsunami recovery. So in the episodes there was a frame around it where there was disaster information being displayed. So after every commercial break it'll start with the video in full frame, then the borders will appear around it, like this:
Our encoders worked really hard to eliminate the border so that you can enjoy the full video the way you usually would. But a side effect of this is that when the border is appearing, the screen will look jittery. This is just a side effect of the video zoom out, and there's nothing we can do about it. Maybe we'll rerelease it from the Blu-Rays when they come out