everytime I click a link on a website that goes to you tube it loads the youtube player but says "can't load video". I can play the movies if I browse to them on a compute though.
The only ones you can view on the iPhone are the ones that have been converted to H.264 - youtube is likely working very hard to do all the conversions, but it's a lot of work and will take some time.
They are still working on converting videos day after day.. keep trying maybe you get lucky .. I did and i got lucky maybe they go by the most popular first