Pets have trees too ya know.

Here are the talent trees for hunter pets, yes they have their own trees. Each type of pet has their own strengths, Cunning for PvP, Ferocity for dps, and Tenacity pets serve as a good tank for soloing.

Cunning: http://www.wowhead.com/?petcalc=Mrbo00fhoMk

Ferocity: http://www.wowhead.com/?petcalc=0md00scz0hoo

Tenacity: http://www.wowhead.com/?petcalc=0R0G0rG00k

For Josh...

...and the rest of you that need the trees for the current patch as Blizzard isn't gonna release 3.1.0 anytime soon. For rotations, check the below posts, they're still the same.

Warrior:
Fury-http://www.wowhead.com/?talent=LhrhzfhZGx00E0ubeRVzAo
Arms-http://www.wowhead.com/?talent=LhrhzfIt0crRccRtGx0sbb
Protection-http://www.wowhead.com/?talent=LVMhzZhxZVhtMxczidIzsGo

Warlocks:
Destruction-http://www.wowhead.com/?talent=IZcLc0sZVcGqM0uVsAfst
Demonology-http://www.wowhead.com/?talent=IZ0gIzsgoV0sguAoVMhq
Affliction-http://www.wowhead.com/?talent=IcxoburAkVVRbstZVchq

Shaman:
Elemental-http://www.wowhead.com/?talent=hEh0qzdItGxst0xxI
Enhancement-http://www.wowhead.com/?talent=hi0hsZ0xxIoxdAIkufot
Restoration-http://www.wowhead.com/?talent=hZ0xxIZxcekVxoxkrIRt

Rogue:
Combat-http://www.wowhead.com/?talent=f0eb0xZMgVbx0xoru0gRtx
Assassination-http://www.wowhead.com/?talent=f0efoeLoVboIzAo0xV0hZxb

Priest:
Discipline-http://www.wowhead.com/?talent=bqcbhhxtrxsicRtfVz
Holy-http://www.wowhead.com/?talent=bVcbzhZcxtccMqiuVcst
Shadow-http://www.wowhead.com/?talent=bVcb0hZZGcfioskfiqczAo

Paladin:
Holy-http://www.wowhead.com/?talent=sxAzxGzhVuMxRtZVcbx0h
Protection-http://www.wowhead.com/?talent=sVZaxVA0ugteIRhox
Retribution-http://www.wowhead.com/?talent=sZaxZVfbtbIucrsguAo

Mage:
Fire-http://www.wowhead.com/?talent=oZcE00RhIuVubhstMIccoc
Frost-http://www.wowhead.com/?talent=of0V0zZZVIccsfu0fdgfst
Arcane-http://www.wowhead.com/?talent=of0Vcu0IzxGuMtedcZmhc0o

Hunter:
Beast Master-http://www.wowhead.com/?talent=cgbMzxxRiuzxstceVbo
Marksmanship-http://www.wowhead.com/?talent=cZceV0ouzGesxkAoe00io
Survival-http://www.wowhead.com/?talent=cxZ0eVZe00i0cIhxuA0ct

Druid:
Balance-http://www.wowhead.com/?talent=0xGbuiIoIdhVhouZbxcub
Feral(Bear Tank)-http://www.wowhead.com/?talent=0ZxGGscrzceRczzAo0Eczb
Feral(Cat dps)-http://www.wowhead.com/?talent=0ZxGMsfrzbeR0huAo0Eczb
Restoration-http://www.wowhead.com/?talent=0VG0uZZfVcubuxiuA0st

Death Knight:
Frost(Tank)-http://www.wowhead.com/?talent=j0EMoZhxxtoe0ohRVssx0x
Frost(dps)-http://www.wowhead.com/?talent=jfVMVZG0xxIxzoGRAosx
Blood-http://www.wowhead.com/?talent=jfVMVh0IsfotzAoZfM0hxco
Unholy-http://www.wowhead.com/?talent=jfVMVZZf0hhxckxcqMcsut

Mages

I'll get right to the point with this one:

Arcane-Use Arcane Blast x3, then arcane Barrage, rinse and repeat.

http://talent.mmo-champion.com/?mage=23000503310033015032310251532103000000000000000000000000000430030010000000000000000000&glyph=011804010608&version=9637

Fire-Fireball, Living Bomb, Pyroblast, and Scorch to apply 5 stacks of Improved Scorch to the target, making sure to cast it every 30 seconds to keep it up.

http://talent.mmo-champion.com/?mage=00000000000000000000000000000003550000123033310531203013510530030013030000000000000000&glyph=161808020608&version=9637

Frost-Nothing but Frostbolts, and Fireball when you get the Brain Freeze effect. Cast Water Elemental and Icy Veins when their up.

http://talent.mmo-champion.com/?mage=23000500310000000000000000000000000000000000000000000000000533030313133100230152231351&glyph=101808010608&version=9637

Enjoy.

Priests

Here's the talent guide for the Priest class.

Discipline is the priests optimal PvP spec, you gain survivability, and keeping others alive as well.
Casting Penance, Renew, and Flash Heals as needed.

http://talent.mmo-champion.com/?priest=150320313050251233132303125123050100000000000000000000000000000000000000000000000&glyph=051215030602&version=9637

Who said Priests only heal? Shadow Priests can be a great raid aspect with replenishment effects. A good rotation is Vampiric Embrace, Vampiric Touch, Shadow Word: Pain, Devouring Plague, Mind Blast, and Mind Flay. When the target is below 35% health, feel free to cast Shadow Word: Death, but be careful to watch your health.

http://talent.mmo-champion.com/?priest=050320300000000000000000000000000000000000000000000000325323051013012323150301351&glyph=171819030602&version=9637

For Holy, refer to the healer post.
Enjoy.

New trees, and Mutilate.

As you can see, I've updated all my links to the current talent trees that will be available with the new patch that is to come out, which introduces Dual-Specs and Ulduar.

And here is another spec to consider for you rogues, Mutilate.

Mutilate follows the basic principles like keeping rupture and slice and dice up, but now you also must keep Hunger for Blood active as well. Instead of Sinister Strike, use Mutilate, which means you'll want 2 daggers. Deadly Poison on the main-hand, Instant Poison on the off-hand. Quicker daggers yield better results due to poison procs and focused attacks.

http://talent.mmo-champion.com/?rogue=00532310534010052010330135100500500300000000000000000005020000000000000000000000000&glyph=181620060501&version=9626

Enjoy.

Healers

This post won't really cover rotations, as healing moves to use is obvious.

Paladin-Haste and Crit are invaluable for Paladins. Using Glyph of Seal of Light or Glyph of Seal of Wisdom depends on what you think you need to improve more, healing or mana efficiency.

http://talent.mmo-champion.com/?paladin=503501503200130531025012510000000000000000000000005032050003000000000000000&glyph=081119040603&version=9626

Priest-Circle of Healing and Prayer of Mending are the moves used the most, but flash heals are to be used as well.

http://talent.mmo-champion.com/?priest=050320300000000000000000000003505103030015253105331351000000000000000000000000000&glyph=012113020603&version=9626

Shaman-Riptide and Chain Heal are most important, but Healing Wave and Lesser Healing Wave are used on the tank accordingly.

http://talent.mmo-champion.com/?shaman=00000000000000000000000000050503300000000000000000000050035311055010501122331251&glyph=200401060302&version=9626

For Druids look at my post on Druids.
Enjoy.

Druids, the Furry Ones.

Druids are one of those classes that can fill all 3 rolls, Tank, Damage, and Healing.
Damage- Feral(Cat) or Balance
Tank- Feral(Bear)
Healing- Restoration...duh

Here is the Cat dps spec. Rotation is Mangle, Rake, Shred x 3, then Rip. A lot of you dmg is gonna be bleeds, and you're using Shred so stay at a position where its usable.

http://talent.mmo-champion.com/?druid=0000000000000000000000000000503202132322010053120031313511005503012000000000000000000&glyph=181710030106&version=9626

Moonkin, the caster dmg side of a Druid. While in Moonkin form, Insect Swarm, Moonfire, Starfire, Wrath is a decent rotation to use. Starfall can be used if needed.

http://talent.mmo-champion.com/?druid=5032103125331033213005311031000000000000000000000000000000205003312000000000000000000&glyph=202219050706&version=9626

Bear tanks are rather efficient, good dodge and high health, as well as being automatically defense capped without bonuses from gear, meaning you can put more into Stamina. Mangle whenever available, apply your 5 Lacerates, and Maul. You also have the nice "oh crap" buttons, Barkskin and Survival Instincts just in case. For Pulls with multiple enemies, I like spamming swipe.

http://talent.mmo-champion.com/?druid=0000000000000000000000000000503232130322010353120300013511005503012000000000000000000&glyph=031110020406&version=9626

Restoration Druids use the Tree of Life form and specialize in Heal over Time spells, and can make very effective healers for raid healing, but they can also do Main Tank healing.
This one is simple, use Rejuvenation, Regrowth, and Lifebloom as needed, lifebloom stacks as well. Wild Growth is great for healing multiple party members at once.

http://talent.mmo-champion.com/?druid=0532003100000000000000000000000000000000000000000000000000230503312031502531350013051&glyph=152116070406&version=9626

Have fun.