Content in iTunes not appearing on Apple TV

I recently got an apple tv and have been browsing around. I wanted to watch an episode of Modern Family so I went into the iTunes tv section and dialed it up. But nothing showed up in the results. I double checked on my ipad, went into iTunes and sure enough all of the episodes are there and I can choose them and use airplay to stream them over to the apple tv.

But why arent some shows appearing when I search directly from the apple tv?? Am I missing something?

The issue is not with files I am trying to share within my network. Its actually the shows that are available through the iTunes marketplace. When I look under TV shows (the second column in the apple tv menu) shouldnt I see all of the shows that iTunes has available for rent/purchase?

Shows like Modern Family which I know are available for purchase through iTunes are not on the list here for me to buy directly from my apple TV. Shouldnt that be the case or am I just supposed to use airsharing to watch them that way?