this weekend, i actually took photographs of Top Gun in DVD 480p, DVD 1080i Upconvert and HD-DVD 1080i, you can see the huge images here:
http://farm3.static.flickr.com/2378/...80ee4766_o.jpg
here are some 100% crops though:
DVD 480P:
DVD 1080i Upconvert:
HD-DVD 1080i:
... not a huge difference between the 480p and the upconverted, but way more detail in the device on the wall and the hat in the HD-DVD