The app frontend for everyone's favorite video streaming service just got itself a nice little update to v4.3.9, which brings a couple of new features. Namely, when you send a video to your paired TV, the app will allow you to control the playback with a nice little entry into the notification bar. So you can watch YouTube on your TV while doing other things on your phone – like checking Google+, for example.
Speaking of, this update also brings G+ profile integration, so everything should be pretty seamless between the two services. Past that, it bundles a fix for the "fullscreen button bug," which I have personally never experienced. If you have, though, that's not a thing anymore.