I have a Samsung TV with built-in YouTube app, but I used it only once or twice when I first got the TV. The user interface is really horrible. Last weekend we had a get together at house and of course I have to show everyone my new gadget! It was an instant hit! Everyone pulled out their iPhones, iPads, Android phones and started playing non-stop YouTube music videos. It could be Gangnam Style from my niece, or Metallica from my brother, or some weird music from my nephew. The HD video came across perfectly. And then when it was time, I cast my laptop desktop on the TV to show my vacation photos in a slide show, but everyone just want to get back to their music videos...