Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
Actually, the first holographic disks/drives are supposed to come out this fall:
http://hardware.slashdot.org/article.pl?sid=07/05/18/0546244
Not for end users yet, but they're coming.
As for using BD as storage, I don't think that will ever happen (at least not more than one layer). Dual-layer DVD-R have been outforever, but does anyone actually use them? They cost more than two individual single-layer DVDs and are slower to burn. I'm guessing multi-layer BD disks will be the same for home users - not used.
Now will these multilayer disks be compatible with hardware today?