Use Siri to Start a Show on the Apple TV
With the newest version of tvOS, you can now use Siri to start a show on your Apple TV from your iPhone or iPad.
Simply say, "Play Modern Family on the living room TV", and your TV should start playing it. You activate Siri on your iPhone, not on the APple TV remote for this feature.
This only works with content that is connected to the TV app, so it won't work with all streaming services and TV shows.