As for being able to play back 720p through an hdmi cable? Who really wants to waste 2GB per hour of video for the off chance that they might play it on a big screen?
You realize you can add/remove media on the device based on when you need it, right?
I'd love to use it when having a movie marathon with my friends - rip all the videos to my computer and put them on the Zune, take it with me to the friend's house, plug it in their TV, and not have to worry about DVD changes.