While there has been a lot of rumors flying around about having unlimited music on itunes for a fee, there hasn't been any talk at all about video.

What Apple should be pushing is free portable video that has commercials put in it. You could download your video in the same manner that you get and watch the itunes video rentals. This means you would download a show and have 24 hours to watch it then it would expire. The purpose for having it expire would be a way for Apple to control the commercials in the video and would be a way to sell it to the industry as a way for them to sell advertising.

Apple would still continue to sell television shows that are commercial free, but that would be what you are paying for. You would also be paying for the ability to keep it. What I think Apple is missing the boat on are sites that already offer television shows online for free with commercials like hulu.com.

Apple iTunes unlimited music: http://arstechnica.com/news.ars/post/20080319-apple-may-bundle-unlimited-itunes-with-ipods.html

Apple iTunes DVR?: http://www.engadget.com/2008/03/19/switched-on-apple-dvr-could-find-its-calling-in-iphone/