You can only watch Hulu on PC's AFAIK now. They block anyone that is on any other platform. You'll get a message saying that this video is not available on your platform if your on the PS3. So my guess is that the same thing would happen on the Wii.
I know how you feel skigil. I too would like to watch Hulu on the Wii or any device trough my TV.
is it possible with homebrew and a modified version of opera mehaps?