Tony Hawk Project 8 - 5.10GB
Madden NFL 07 - 7.08GB
Resistance: Fall Of Man - 17.53GB
Marvel Ultimate Alliance - 6.85GB
Untold Legends: Dark Kingdom - 8.27GB
NHL 2K7 - 7.86GB
Need For Speed Carbon - 11.5GB
Tiger Woods 2007 - 7.19GB
Fight Night Round 3 - 4.3GB
NBA 2K7 - 7.59GB
Call Of Duty 3 - 6.7GB
Full Auto 2: Battlelines - 3.55GB
Mobile Suit Gundam Crossfire - 3.96GB
This basically proves that for most games regular dvd's are fine, and I have no doubt that NFS Carbon and Resistance could have been done on a dual layer dvd.
No one can really argue that having more space is bad, but to say it's impossible without huge storage such as 50gb is simply not true. Higher res audio is nice, but points being made is that with the state of most people's audio systems simply would not hear the difference is true. Heck, even those with a good audio system 80% would probably still fail a blind a/b test between compressed and uncompressed. After all, they paid a lot for thier bose speakers. :lol