bit density
macrumors 6502
1) I am looking forward to Minis with thunderbolt. I'll grab one when they ship. I say that as somebody that has been using Apple computers since the ][e.
2) Why do people want BluRay support in Macs? Is it to watch films, or to burn 50GB discs? I'm not being hostile, I'm genuinely curious.
As to point 2. I think that there is going to be a genuine archival need for large chunks of video that won't be well satisfied by hard disks. But I think that group will become initially satisfied by some sort of BR recorder on Thunderbolt.
The second real need is BR production. And that should be a real mac niche.
And then, yes, to watch movies. Imacs find their way into a dorm as *THE* single screen. It plays games, watches movies, plays music and accesses the internet. And BR movies are better. And as it has been pointed out, the Mac DVD player, is NOT the best DVD player out there.