You can get Youtube and Hulu via Serviio, and unlike Playon, it's free. IIRC, there have been some reports of Serviio working on Hopper, but I haven't been able to get it to work on mine. But I don't have a HIC.
Since DirecTV has Youtube, I would expect Dish to offer it at some point. Personally, I find my blu-ray player does a much better job streaming than DirecTV or Dish DVRs.
The $35 Chromecast USB device works great for watching anything on your TV. Anything you bring up on the Chrome browser on your computer or on the Chromecast app on your phone displays full screen on your TV.