Well, I don't think it's going to replace any of the things you mentioned. Rental didn't replace buying movies and tv shows. On demand didn't replace rental. Rental/On demand hasn't replaced watching movies/tv shows on TV through regular channels. It'll just be an additional revenue stream. It'll be great for people who don't want to own it and only want to watch it once. For people, like me, who want to hear commentary tracks and see making ofs and behind the scenes footage, it won't go anywhere. It's something that I would use, but I wouldn't use it exclusively. Some programs I want to hear commentary, others I could care less. For those ones, this box is perfect.