Wow titanium, you are a very inquisitive person! Good!
One thing not covered here and that you should understand is that there are 2 ways to make a DVD disc with data on it. One is to burn it with a home burner, not for commercial use, and for commercial and mass production, they are "pressed." A glass master of a disc is set on top of the acrylic blank media and somehow the data is transferred from the master to the media. This enables much more output at much lower costs. DVD9s and commerically produced discs use this glass pressing technique to output the discs.
DVD9s have a dual layer that the laser can identify. It's picked up when the disc is initialized.
As far as DVD9 home burners, I say that nothing's impossible. If I had a computer engineering degree with focus on optics from Stanford, maybe I'd be able to figure out how to make one.
As far as the games, so far there are only 6.
The Yellow PS2 auto-boots all. PS2, PS1 stealth and DVD movies.