This feature just became possible on xbox 360 and netflix but I believe we can do it better.
This is the direction I would like to see boxee head.
-More friends integration (comments on resent views, maybe status updates like twitter, with a feed)
-Party watch, start and join movies if both client have a copy and be able sync up if 1 client is ahead.
-be able to chat during the movie in party mode. Example Here
What do you guys think?