Edit: If this is just 8mp's list of fave 90s bands then I'm cool with it. Different stroke and all.
Not a single mention of Tool in a thread about 90s bands is basically asinine. I'm not really a huge fan of the group, but if we are talking, and this is something that 8mp specifically mentioned, about listenability over the course of a full album Tool has to be up there.
Undertow and Aenema were both critically acclaimed albums and the fact that Aenema could rise to No. 2 on the charts despite not being Top-40 friendly speaks volumes on its own. Uniquely smooth drum patterns, top-notch vocals and rhythmic yet heavy guitars and bass.