You, nor Hulu have been hacked. proxy.piratenpartij.nl is a proxy that has been set up by the Piratenpartij, the dutch branch of the Pirate Party (of Pirate Bay fame.) This proxy has been set up in defiance of a local ruling to block access to the Pirate Bay website and also to allow dutch internet users to access content that has been blocked from them based on their geographical location, such as Hulu which is only available to the US. Source: (in dutch) "Piratepartij cannot be forced to bring generic proxy offline".
So the site's not malicious but the question remains why you have landed on a page that redirects links to the dutch proxy. Could it be that you've searched for something on the internet, or followed a link meant for non-US users, and landed on the proxied Hulu site ?