Given the numerous wall posts, and my own frustration, I contacted the application operators looking for the reasons why the access is only for the US.
This site has been granted access to embed the videos from the
Hulu.com site. The limitations on access are completely controlled by Hulu.
The available videos include the very latest episodes from the US - so given TV's current approach to delayed access outside the US it is inevitable that any official access wouldn't allow online viewing of those latest episodes.
As for the older episodes I can only offer Hulu's official 'apology':
Hulu is committed to making its content available worldwide. To do so, we must work through a number of legal and business issues, including obtaining international streaming rights. Know that we are working to make this happen and will continue to do so. Given the international background of the Hulu team, we have both a professional and personal interest in bringing Hulu to a global audience.