http://www.playon.tv/content-channelsYou can check out the channels at the link. Roku got playon in October but then just as quickly ungot it and it was removed (google roku+playon and you will see about it). Supposedly it is available as a private Roku channel but I cannot get any of the codes to work (such as PLAYON or MYPLAYON).
Is Hulu Plus worth it? I don't know but here are some opinions:
http://www.google.com/search?q=is+hulu+plus+worth+it&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-aMy Roku box is by my 50" plasma in the living room, but I have run lines to the tvs in my 2 bedrooms so I can watch it there. You can also take your Roku box with you when you go on vacation as long as there is a fast internet connection, plus I believe you can have up to 3 Roku boxes on one account so people could watch different things in different rooms. Even with 1 Roku box you can watch one thing with the box and another at the same time on the computer.