I'm interested. I was thinking the other day that the remote lacked a keyboard for searching. Also there are times I want to check IMDB, chat with others about something really quick or just check the news in between commercial breaks instead of fast forwarding. The tagging system is nice, I'm always wanting my cousin to check out something, the same can be said with him. I also like the optical select button, and the ability to choose any point in the video without the fast forwarding. The people who thought of this really did their job. Great concept!
I assume hardware wise that it would just be the remote, and then the software would just be added to the Hopper/Joeys in a later s/w update.