As far as really seeing why Blu Ray is great it helps if you A) have a TV bigger then 42 inches and even more so B) have a 1080p TV. When I got the PS3 at release there were very few 1080p sets so I bought it originally with a 720p set thinking it would be good enough. After a few days I returned the set and got a 1080p that was actually a few inches smaller and it looks WAY better. If you watch something like Casino Royale with a 1080p bigscreen TV and a decent set of speakers its quite amazing (the sound is even more of an improvement then the picture, you get big movie theater quality sound that is uncompressed in most cases.)
The earlier movies are not as good as the later ones in many cases, the later ones have tons of extra features and deleted scenes. I got enter the dragon on blu ray, it had documentaries about bruce lee, the entire unfinished version of Game of Death and TONS of other good stuff, it had at least 30 special features of which 10 or more were quite compelling and worth watching. There were entire songs (with hillarious music videos) and tons of extra scenes on the Walk Hard Blu Ray as another good example.
Either way though, its the TV that makes the big difference, without a newer 1080p TV you might as well just use an upscaling DVD player or something.
PSN ID: ChosenOne feel free to add me
