PAGE IS INCOMPLETE - I'M WORKING ON IT! CHILL MAN!

Find your class, choose your talent spec, follow the links:

DEATH KNIGHT
BLOOD: - Tanking Guide. (Talents, gems, rotation.)
UNHOLY: - DPS Guide - Spreading your plagues (Talents, gems, glyphs, etc)
FROST: DPS Guide to freezing your enemies.

DRUID
DPS: - Feral Cat DPS . Feral Bear (Rawr!) theorycrafting + info. | Feral Q&A's
RESTORATION: Talent spec, gems, etc. | Restoration Q&A's.
TANK:

HUNTER (Hunter Q&A's) | Solo'ing Old Instances For Fun + Profit.
BEAST MASTERY: Beast Mastery information
SURVIVAL: Survival Guide
MARKSMANSHIP: Marksmanship Guide

MAGE
ARCANE:
FROST:
FIRE:

PALADIN
HOLY: - Holy Compendium - Specs, cooldowns, rotations, the usual. (Everything you need!)
DPS: - The Retribution Concordance - Gems, glyphs, number-crunching, talents, rotations etc.
TANK: - Tanking/Protection Field Manual. - Contains everything from gems to enchants to talents + rotations.

PRIEST
SHADOW:
DISC:
HOLY:

ROGUE
ASSASSINATION:
COMBAT:
SUBTLETY:

SHAMAN
RESTORATION:
ELEMENTAL:
ENHANCEMENT: - PlanetOfTheHats (Excellent Shaman Site.) |

WARRIOR
ARMS: Arms DPS in Cataclysm | Recommended Arms Talent Spec - Read the FAQs below for rotation + info
FURY: Fury DPS in Cataclysm | Recommended Fury DPS Spec. (Swap Titan's Grip for Single Minded Fury as per preference. You also have a lot of leeway regarding Major and Minor glyphs.)
PROTECTION: Protection Tanking in 4.x
Warrior FAQ's | http://elitistjerks.com/f81/t37462-warrior_dps_calculation_spreadsheet/]Warrior DPS Calculation Spreadsheet

WARLOCK
AFFLICTION: DoTs and you.
DEMONOLOGY: The Demon Within
DESTRUCTION: The Demonic Mage
Warlock Simple Q + A

If there's stuff missing, don't worry, it's coming soon.

http://www.wow-gem.com/gems.aspx