X-Box 360 Video Download service

I was a little surprised to hear that the Xbox is getting a TV and movie download service. In some ways this makes a lot of sense. They already have a store front with X-Box Live. I am a little surprised because I am not sure this is how people want to use their X-Box. The hard drive is not that large. If the video is HD it will only fit a few shows.

Would you use your X-Box 360 this way?