This is one of those subjects where I think "curation" is more useful than aggregating a lot of people's opinions. It's interesting to know what a specific person thinks are really great albums (assuming you care about that specific person's taste, anyway), but pooling a bunch of internet users' opinions just converges to a very, very predictable common denominator.
As an example, Piero Scaruffi's "best albums" list (http://www.scaruffi.com/music/best100.html
) is interesting even though I disagree strongly with some of his opinions. It has what you might call a "curator's voice".
I guess it goes without saying that these lists are always about rock/pop albums. There doesn't seem to be such a listing mania in other genres, and it would be just bizarre to try to integrate all of music and argue about which of _Sgt. Pepper_, _Let My Children Hear Music_, and the Hollywood String Quartet recording of "Verklaerte Nacht" was better.