blu ray discs are a huge step up "graphically" and anyone who can't see it doesn't have their display configured properly.[/QUOTE]
More so for newer films than older films especially sci-fi stuff. All older films have their special effects shot in standard def which means those effects would have to be completely redone to be in proper hi-def. Otherwise they're simply upscaled. That's an expensive plan that only perhaps LucasArts and Paramount would do for Star Wars and Star Trek respectively. This explains why putting older TV shows like Buffy would not be worth the investment on Blu-Ray or why only seasons five and six of Smallville are in Blu-Ray. Lets not forget many older films benefitted from a lower resolution to hide technical limitations. Blu-Ray will take much longer to even come up to par with dvd sales. The difference of VHS to DVD was much greater than DVD to Blu-Ray going beyond just the actual 'look'
As for sound, yeah the HDTV and its standard speakers isn't the reason for better sound. Uncompressed audio is the reason because DVD simply doesn't have eough capacity for uncompressed sound.