Yeah, I guess cramming 100 gigs onto a triple-layer rewritable Blu-ray disc is nice, but seriously, what's the point? Physical media is a terrible idea, especially right now, when the future is all in the cloud.
Panasonic's sexily named LM-BE100J BDXL Blu-ray discs are a special edition of single-sided discs capable of holding up to 100 gigs and being rewritten over and over. Neato. They'll cost you $120 each when they go on sale in Japan in April. Oh, and they've also got a special scratch-resistant coating to help prolong the time until some accident renders them totally useless, destroying all of your data at the same time.
And that right there is the problem with physical media, specifically with optical media. It's fragile, and that makes it a lousy place to store data you care about. Besides, under what circumstances would anyone ever need optical media? In day to day use, I can think of like two: buying software and renting movies. Both of these uses are getting rapidly eclipsed by online services, and rightly so.
Cloud-based services have the advantage of making sure that your data is always safe and secure, mirrored across one or more redundant RAID systems in geographically separated server farms. The downside is that having all of your stuff somewhere else means that when you need something, you have to either download or stream it, but it's not going to be too long (knock on wood) before we're all rockin' awesome broadband connections that will make data transfers fast and effortless.
Like many of you, I've got a big DVD collection left over from back when there was nowhere else that made sense to put several gigs of data. But now, I'm slowly transferring all of that onto my home RAID system and my Pogoplug, which will quite happily stream my movies to all of my computers that don't have DVD drives. And that's really the future: all your media, wherever you want, whenever you want. Bigger and better Blu-ray is just prolonging the inevitable.