having it on dvd is nice but its the same boring sd picture ive seen since i was a kid on tv loads of times, watching a film in High definition is like watching a completely new film, you see so much more detaill it actually draws you in as you see new things you couldn before, and also i struggle to tell the difference with mp3 and cd but with the clarity of the sound felt amazing of course it helps to have a bigger tv and audio system sadly not mine , i watched the terminator in hd and honestly it felt like watching it for the first time.