You can use the Apple Watch as a remote control for your Apple TV and iTunes. This is great, since you can never find the small aluminum remote or the new Siri Remote when you really need it.
Sometimes you need to pause the TV when you can't use your iPhone Apple TV remote app. Now you can use your Apple Watch. You can swipe through menus, scroll through lists, choose movies, listen to iTunes radio and more. You can also use a similar app to control your iPhone music playback.