I really like good album packaging. Ys is fantastically packaged; it suits the subtle, elegant feel of the music on the CD.
On the other side of the coin, Arcade Fire's "special edition" with it's crappy box and pointless little flip-books is the apitamy of poorly executed packaging. Tool's last album is the same. Nice idea, badly constructed (and gimmicky).
So which other CDs have excellent packaging? Whether it be booklet design, paper quality, or innovative packaging, or whatever else.