Lord Mhoram
Hero
Other threads have had people listing thier collections, and which 3.5, 3.0 or X books they have and use. I finally took the time to jot mine down. Comments and Question welcome, as well as your own list of what you use on a regular basis. And if anyone has any suggestions on things to add to the collection, feel free. 
So, I play 3.5, with a lot of 3.0 material used with basic conversions. I only play D&D with the wife, I don't game with a group. Just to show how silly I am here is a list of the reference material I use - this is what I have downstairs where I play, the upstairs has at least this much material that I don't use (having a virtually unlimited gaming budget over the last 5 years has been very nice).
Players & Gm sourcebooks:
Dragon Issues 274 - 338 (and counting)
Player's Handbook
Dungeon Master's Guide
The Quintessential Fighter 1 & 2
The Quintessential Cleric 1& 2
The Quintessential Rogue 1 & 2
The Quintessential Wizard 1 & 2
The Quintessential Barbarian 1 & 2
The Quintessential Monk 1 & 2
The Quintessential Bard 1 & 2
The Quintessential Paladin 1 & 2
The Quintessential Druid 1 & 2
The Quintessential Ranger 1 & 2
The Quintessential Sorcerer 1
Sword and Fist
Defenders of the Faith
Song and Silence
Masters of the Wild
Tome and Blood
Complete Divine
Complete Arcane
Complete Warrior
Complete Adventurer
Path of Magic
Path of Shadow
Path of the Sword
Path of Faith
Book of Exalted Deeds
Planar Handbook
Manual of the Planes
Beyond Countless Doorways
Portals and Planes
Epic Level Handbook
Magic of Incarnum
Expanded Psionic Handbook
Hyper conciousness
Ultimate Feats (Mongoose)
Feats (AEG)
Ultimate Arcane Spellbook
Ultimate Divine Spellbook
Spell Compendium
Ultimate Prestige Classes 1 & 2
Races of Stone
Races of the Wild
Races of Destiny
Races of Ebberon
Deities and Demigods
Cry Havoc
Fields of Blood
Settings & source books that I use classes or rule snippets from:
Monte Cook's Arcana Unearthed (a lot of the classes)
Eberron (artificer)
Forgotten Realms (Spellfire stuff)
Relics and Rituals 1, 2 - (spells only.)
Oriental Adventures, Rokugan, Magic of Rokugan (Shugenja class and spells only)
Unearthed Arcana (Gestalt, and Fractional saves, and some variant classes)
And of course, monster and monster based books.
Savage Species
Mythic Races
Star Wars Ultimate Alien Anthology
Monster Handbook
Book of Templates
Draconic Lore
Necromantic Lore
Giant Lore
Elemental Lore
Twisted Lore (all from Fantasy Flight Games)
Bestiary of Kryyn (Sovereign)
The Book of Fiends (Green Ronin)
Creature Collection 1, 2, 3 (Swords and Sorcery Studios)
Denizens of Avadnu (Inner Circle)
Denizens of Dread (Arthaus)
Dragonomicon (WotC)
Penumbra Fantasy Bestiary (Atlas)
Field Folio (WotC)
Liber Bestarius (Eden Studios)
Libris Mortis (WotC)
Lords of Madness (WotC)
Manual of Monsters, Warcraft (Arthaus)
Monsternomicon (Privateer)
Monster Encyclopedia 1 & 2 (Mongoose)
Monster Manual 1,2, 3 (WotC)
Monsters of Luclin
Monsters of Norrath (both Swords and Sorcery Studios)
Tome of Horrors 1,2 (Necromancer Games)
So, I play 3.5, with a lot of 3.0 material used with basic conversions. I only play D&D with the wife, I don't game with a group. Just to show how silly I am here is a list of the reference material I use - this is what I have downstairs where I play, the upstairs has at least this much material that I don't use (having a virtually unlimited gaming budget over the last 5 years has been very nice).
Players & Gm sourcebooks:
Dragon Issues 274 - 338 (and counting)
Player's Handbook
Dungeon Master's Guide
The Quintessential Fighter 1 & 2
The Quintessential Cleric 1& 2
The Quintessential Rogue 1 & 2
The Quintessential Wizard 1 & 2
The Quintessential Barbarian 1 & 2
The Quintessential Monk 1 & 2
The Quintessential Bard 1 & 2
The Quintessential Paladin 1 & 2
The Quintessential Druid 1 & 2
The Quintessential Ranger 1 & 2
The Quintessential Sorcerer 1
Sword and Fist
Defenders of the Faith
Song and Silence
Masters of the Wild
Tome and Blood
Complete Divine
Complete Arcane
Complete Warrior
Complete Adventurer
Path of Magic
Path of Shadow
Path of the Sword
Path of Faith
Book of Exalted Deeds
Planar Handbook
Manual of the Planes
Beyond Countless Doorways
Portals and Planes
Epic Level Handbook
Magic of Incarnum
Expanded Psionic Handbook
Hyper conciousness
Ultimate Feats (Mongoose)
Feats (AEG)
Ultimate Arcane Spellbook
Ultimate Divine Spellbook
Spell Compendium
Ultimate Prestige Classes 1 & 2
Races of Stone
Races of the Wild
Races of Destiny
Races of Ebberon
Deities and Demigods
Cry Havoc
Fields of Blood
Settings & source books that I use classes or rule snippets from:
Monte Cook's Arcana Unearthed (a lot of the classes)
Eberron (artificer)
Forgotten Realms (Spellfire stuff)
Relics and Rituals 1, 2 - (spells only.)
Oriental Adventures, Rokugan, Magic of Rokugan (Shugenja class and spells only)
Unearthed Arcana (Gestalt, and Fractional saves, and some variant classes)
And of course, monster and monster based books.
Savage Species
Mythic Races
Star Wars Ultimate Alien Anthology
Monster Handbook
Book of Templates
Draconic Lore
Necromantic Lore
Giant Lore
Elemental Lore
Twisted Lore (all from Fantasy Flight Games)
Bestiary of Kryyn (Sovereign)
The Book of Fiends (Green Ronin)
Creature Collection 1, 2, 3 (Swords and Sorcery Studios)
Denizens of Avadnu (Inner Circle)
Denizens of Dread (Arthaus)
Dragonomicon (WotC)
Penumbra Fantasy Bestiary (Atlas)
Field Folio (WotC)
Liber Bestarius (Eden Studios)
Libris Mortis (WotC)
Lords of Madness (WotC)
Manual of Monsters, Warcraft (Arthaus)
Monsternomicon (Privateer)
Monster Encyclopedia 1 & 2 (Mongoose)
Monster Manual 1,2, 3 (WotC)
Monsters of Luclin
Monsters of Norrath (both Swords and Sorcery Studios)
Tome of Horrors 1,2 (Necromancer Games)
