The big US broadcasters like to tout the strength of their mobile TV apps, but actually viewing the apps' content on a TV has frequently proven elusive. That's a rather glaring omission, don't you think? Some credit is due to NBC, then, as it recently updated its iOS app with AirPlay support. Unfortunately, it's pretty basic at this stage. All you can do is turn on AirPlay mirroring and beam whatever is on your mobile device's screen -- you're out of luck if you'd like to see optimized videos, let alone do something else on your iOS gear while you watch. Still, it's good to see NBC catch up on features that services like Hulu have had for quite a while.