This post is dedicated to showing and defending the build that i personally view as the best tanking build out there, altho it should be known that some people would use different builds because they use different raid set ups or have very specific gear (Idol of the corruptor and improved mangle).
I will post my reason for having each talent when i discuss the talents that are in the build.
This is the build i am referring to.
At first i would have thought that with the advent of Ulduar i might not be rage starved and could switch these points into Feral Agression for the added effect on demorolizing roar, sadly i was quite disappointed that i still badly needed this talent to keep my rotation going.
Feral Instinct [3/3]
Swipe is important skill for AoE tanking and also quite a good threat move to have in your rotation so you can't go without this for threat.
Savage Fury [2/2]
The massive damage increase on maul and mangle make this a must have for tanking damage and threat.
Thick Hide [3/3]
Must... have... more... armor (damn 3.1 nerf).
Feral Swiftness [2/2]
You are a tank, you want to take as little as damage as possible so can't say no to 4% dodge.
Survival Instincts [1/1]
Proper oh shit button, use when you get to low on health.
Sharpened Claws [3/3]
Crit makes savage defense proc so can't miss this, it's also a pre-requisite for Primal Fury and Primal Precision.
Predatory Strikes [3/3]
Attack power increases our bear-block value and it's also a pre-requisite for Heart of the Wild.
Primal Fury [2/2]
Can never have enough rage.
Primal Precision [2/2]
Free expertise means less parry/dodge and more threat/rage/savage defense procs.
Feral Charge [1/1]
Technically not so important, but i kinda like it. Needs to be seperate cooldown for bear and cat however ;(
Natural Reaction [3/3]
Grants extra dodge AND rage? Yum
Heart of the Wild [5/5]
Grants more health, your bread and butter as a bear.
Survival of the Fittest [3/3]
Increases stats which is nice but the key part of this talent is that it makes you uncrittable versus boss level encounters.
Leader of the Pack [1/1] + Improved Leader of the Pack [2/2]
Healing yourself every time you crit effectively makes you have more health which is a very good thing, the buff it offers to other players is also very nice.
Protector of the Pack [3/3]
Pure godly talent, grants more attack power which increases the bear-block value and reduces damage taken by a flat ammount.
Infected Wounds [3/3]
Could do without this talent on single mobs as a lot of classes overwrite the attack speed part of the talent but on multimob fights like Razorscale it helps a lot in terms of reducing the damage taken.
Mangle it self is a good threat move, reducing the cooldown is just useless however, if you don't know why read this post. NOTE: If you have the idol of the corruptor then improved mangle offers a substantial increase in survivability, read here to see how and why.
Rend and Tear [5/5]
The damage and threat this talent gives is simply amazing, can't live without it.
Primal Gore [1/1]
The threat this gives is not great but every little bit helps, the main point in my opinion is the critical hits that trigger Savage Defense.
Great to pop during heroism or at the start of a fight for a threat boost, once lacerate is going.
Improved Mark of the Wild [2/2]
This talent is so godly with the 2% added stats now that i can't see any druid not having this talent (no matter the build).
Furor always has been a PvP talent in my opinion so not always having the 10 rage when i go into bear is no big deal for me as i pop enrage before i pull a boss anyhow.
10% extra damage is a lot of damage and threat, take it.
Natural shapeshifter [3/3]
Useless, pre-requiste for Master Shapeshifter however.
Omen of Clarity [1/1]
Free attacks helps a lot as you will have times when you just seem to dodge everything and not have any rage to use.
Master Shapeshifter [2/2]
A flat 4% damage increase helps a lot for your threat (2.07 modifier so that's ~ 8% threat), also the damage it self is quite nice.
Glyph of Survival Instincts (Major)
This new glyph is very helpful when healers let you get to low on health.
Glyph of Growl (Major)
Nothing is worse then getting a resist on growl.
Glyph of Frenzied Regeneration (Major)
When you pop this you need health, so taking extra healing is a perfect bonus.
Glyph of Challenging Roar (Minor)
Nifty little glyph to have when pulling lots of big packs in short succession (ie Naxxramas).
Glyph of Thorns (Minor)
A lazy druid's best friend *cough cough*
Free Minor Glyph
No real nice minor glyphs left that are really important for tanking, you could pick up Glyph of Uburdened Rebirth if you want to be sure you never have to say 'oh shit, i ran out of reagents'.
Things i did not take but could be handy
Feral Agression [0/5]
Would like to have it but can't lose points anywhere else, just use normal demoralizing shout.
Shredding Attacks [0/2]
Having 2 rage cheaper lacerates is nice but not good enough to warrant losing 2 points somewhere else.
King of the Jungle [0/3]
The added threat when you use enrage is nice for threat-bursts but it requires you to enrage, which is something you should not want to do as a (Main) Tank. The type of bonus is nice i'll agree and that's why i included Master Shapeshifter in my build.
Glyph of Maul (Major)
Nice glyph to have for when you want to get high on the damage meters or doing 5 man heroics but with 3.1 Glyph of Survival Instincts is a far better choice for pure main tanking purposes.
I hope this helps some people finding their builds specifically aimed towards tanking.