I hate to be pointlessly picky (not really...), especially to someone that's made lots of good arguments on this thread, but blu-ray isn't always full bitrate h264 (if only the hd-dvd crew had done what sony did...) - there's tonnes of releases in mpeg2. (I'm not comparing any streamed service to optical obviously)
It still looks good, but seems pointless as these discs have such strict formats - simply, why bother with mpeg2 when there's h264 and vc1? Judging by lots of releases on hd discs, and tonnes of old dvds, I don't think the media companies really know/care what they're doing. A video is only as good as the packaged product, and the source/encoding/format/bitrate/etc all play a part. It's a shame with the current tech that there's still poor releases, and multiple revisions/editions - do the job properly first time please.
The majority of discs look good, but previous experience always makes you wonder if they could have done better. Still using regions, phone-home, and high a/v bit-rates as drm doesn't make me a motivated consumer of these (pointlessly expensive) discs.
Mentioning the sound on an apple forum is a bit silly - dolby digital passthrough is an art on their new machines (excl atv), let alone the software/hardware required for hd audio!