Overall:
http://be.imba.hu/
http://elitistjerks.com/f31/
http://www.mmo-champion.com/
http://www.dual-boxing.com/forums/index.php
http://www.wow.com/

Databases
http://thottbot.com/
http://www.wowhead.com/
http://wow.allakhazam.com/
http://www.wowguru.com/
http://www.wowdb.com/

Addons

http://wow.curse.com/downloads/wow-addons/default.aspx
http://www.wowinterface.com/find.php

Movies

http://www.warcraftmovies.com/

Class sites

Death Knight
http://deathknight.info/

Druid
Boomkin: http://elitistjerks.com/f47/t21687-druid_balance/
Feral: http://www.emmerald.net/index.html
Feral (Bear): http://www.tankspot.com
http://druid.wikispaces.com/
http://www.codeplex.com/Rawr/Release/Pr ... seId=12354
http://thedruidsgrove.org/wow/

Hunter
http://www.tkasomething.com/
http://www.bigredkitty.net/
http://www.friendshatingfriends.net/ajp/sgsp/

Mage
http://www.manoutoftime.org/staticpages/index.php/tcom
http://forums.subcreation.net/

Paladin
Prot: http://www.tankspot.com
Prot: http://maintankadin.failsafedesign.com/
Ret: http://cromfel.battlefield.fi/
Ret: http://retpaladin.com/
Holy: http://www.lightnatured.com/forum

Priest
Holy: http://www.lightnatured.com/forum
Shadow: http://www.shadowpriest.com/

Rogue
http://www.shadowpanther.net/
http://www.roguespot.com/

Shaman
Resto: http://www.lightnatured.com/forum
Enhance: http://elitistjerks.com/f47/t20765-shaman_enhancement/

Warlock
http://elitistjerks.com/f31/t17008-warl ... ompendium/
http://wowmb.net/

Warrior:
Prot: http://www.tankspot.com