I agree that there is blocking occurring, not just on iPhone but on Apple TV as well. The YouTube app on ATV allows you to browse your YouTube favorites - but a number of music videos simply do not appear in the list. It drove me a bit nuts at first, thinking it was a glitch. It's ONLY with official music videos. They do not show from favorites, or via search. FAIL. It's more capitalistic than communistic -- obviously Apple is trying to force you to buy the videos through the iTunes Store.