Added one more

Sober by Tool. They have a ton of awesome stuff (in fact the entire AEnima CD absolutely rocks). Schism from Lateralus gets high marks as well.

Sober, however, was the first most of us heard from Tool and perhaps for that reason has a special place in my collection. In addition, and this is really what counts, is that it could be biographical for most of us -- on either side of the coin as is were.