I've just starting to use my PBO again after not paying any attention to it for several months. As I surfed through the threads, again and again Hulu was mentioned but there is no solution other than something like PlayOn or Tversity. Neither of those works for us Linux people.
So, I looked around and Hulu has released a Linux app . I'm not the most versed in adding 3rd party apps to the PBO and I'm not blessed with lots of spare time so I'm just making the community aware if it if they are not already.