T's Death Knight Guide 3.2: Frost Talent Builds

DISCLAIMER: This guide is not updated to 3.1 yet. Please be patient.

17/50/0 +4 Frost DPS
This is essentially my Frost DPS build. The points in Rune Tap, Hungering Cold and Frost Aura are Wild Cards and can be spent elsewhere.
Note: Between Annihilation, Rime, Subversion and Dark Conviction, your Obliterate has an extra 32% chance to crit. That is what this build is designed around. Frost may not give the highest sustained DPS, but it has great potential.
Why only 2 points in Runic Power Mastery? Simple. 120 RP grants you 3 Frost Strikes. 130 grants you 3 Frost Strikes with 10 useless RP left over.

5/59/7 Frost Tanking
Arguably the best tanking build for early gear levels.
Excellent physical mitigation from Toughness and Frigid Dreadplate.
Acclimation and Frost Aura also help with heavy magic-dealing enemies.
Lichborne and Unbreakable Armor give Frost Tanks other skills to use while Icebound Fortitude is on cooldown.
While Hungering Cold may seem like a great AoE tanking ability, I don't feel it's necessary. A 1 minute cooldown means you can only use it once on most AoE pulls. I feel you're better off using a combination of Death and Decay, Pestilence, Howling Blast and Blood Boil for multiple mobs. Plus, that RP cost means you're more than likely only using it part way through the battle.

17/54/0 Frost PVP Build
Frost's incredible burst potential makes it perfect for PVP.
This is really the only time I suggest taking Icy Reach and Deathchill.
This is where Hungering Cold really shines. Death Knight Frost Nova FTW.

10/56/5 Dual-Wield Tanking Build
Insanity! As everyone knows, Dual-Wielding causes extra parries. Every time (most) mobs parry, their swing timer resets and the next attack comes faster. Dual-Wield tanking leads to getting Parrygibbed. Right?
First of all, read this. Long story short: A DK Dual-Wielding 2 slow 1-handers actually has LESS chance of being parried than a Warrior using a fast 1-hander, as tanking Warriors do.
I've seen DW tanking builds that weren't heavy Frost, but I don't like them. Frost Strike cannot be parried. That is essential, as far as I'm concerned.
Dual-Wielding allows you to equip 2 good, defensive 1-handers. This should give better tanking stats over a 2-hander in most situations. However, the tradeoff is slightly reduced threat generation.
Please note, this build requires VERY good gear and is not recommended for entry-level tanking.