When in the 80's I saw Peter Graves use those little laser discs to find out about their new Mission:Impossible, I thought that was great new technology. A few years later audio CDs arrived in Portugal. When DVDs started to come out, I found out what a great picture quality compared to the old VHS tapes. And the possibility of watching a movie with English subtitles was a great way to learn English and to understand the picture much better than any language translation because there are expressions which just can't be translated. Either you understand it or you don't.