For example
The app on iTunes shows back to the future and the godfather in the screen shot, both of which aren't available in the UK netflix store.
To clarify, the above statement i made is unfair
I have an American proxy i used to check Netflix USA and both back to the future and the godfather are DVD rental only.
However, we are still missing some streaming content over the USA, like Lost isn't available or Senna the movie.