I should also point out for those people outside the U.S. who want to bypass Hulu's "out of country" restrictions, you should download and use
Hot Spot Shield
Its a free internet security suit that encrypts and protects inbound / outbound Internet traffic (email, instant messaging, VoIP calls, web surfing, etc.) by creating a virtual private network. Thus hiding your actual location to a USA based IP as HotSpot Shield is its self for USA only. So after installing HotSpot Shield, run it and you will see a small icon on the task bar right click it and connect a window in IE or Firefox will open and will show the status if it gets connected then refresh Hulu and enjoy the kool episodes.
USA owners could use it also to hide their actual location when downloading stuff.