I have verified that, in the preferences for iTunes, that tv shows 
and music videos are configured to play back in full screen.

Still, I can only hear the audio unless I walk to my computer 
and manually set it to play at full screen.

When my tv episode comes to and end, iTunes returns to the 
playlist view, and I must manually set it to view at full screen 
again.

I would gladly become a registered user if this issue could be 
resolved somehow.