Try the new Pet Sounds from the Beach Boys. Even if you are not a big BB fan, this is an amazing album, and they did a great job with the remaster and mixing of it to multi-channel.
And everyone also seems to really like the Goobye Yellow Brick Road. I've got it on SACD, and love it, but everyone I know likes the DVD-A just as much.

Axioms; For when you've just Gotta have More Cowbell! 60s 150 350 8s 2is RX-V2500 DVD-C750 2900