I admit I was at first skeptical about the usefulness of having HD-DVD and DVD on one disk but when the UPS guy delivered 300 another family member was on the big screen. I was eager so I watched it on my computer, DVD use #1.
Later in the day I watched it on my Toshiba A2 (my god it was gorgeous!!!). Two days later I watched it at a friends house on his dvd player, DVD use #2. Then when I got home I ripped it onto my xbox, DVD use #3.
I'm now very glad that they have these dual format disks.