Albums I couldn't live without:
EverEve - Stormbirds (progressive metal)
Robert Miles - Dreamland (dream techno)
Mithotyn - In The Sign Of The Ravens (viking black metal)
Disown (no album title, was their first release, is exceptionally rare) (progressive metal)
Dimmu Borgir - Enthrone Darkness Triumphant (cultistic black metal)
Dissection - Storm Of The Light's Bane (black death)
Moonspell - Wolfheart AND Irreligious (2 albums) (progressive erotic metal)
Chronic Decay - Six Feet Of Earth Makes All Men Equal (thrash/punkish)
Cradle Of Filth - Dusk And Her Embrace, Cruelty And The Beast, Midian, AND Bitter Suites To Succubi (4 albums) (erotic black metal)
Dead Can Dance - Into The Labyrinth (new age/electronic/tribal)
Rollins Band - Weight (hard rock...anyone who calls this 'punk' gets an asskicking)
Brujeria - Raza Odiada (mexican death metal)
That about covers it for albums I can't live without. I'm sure there's more but this is a great start.