Hearthpwn

Overview:
Use the cloning and resurrection to constantly fill the board with massive minions. Vivid Nightmare, Resurrect,Eternal Servitude, and the Mass Resurrection, make an unstoppable board.

Mulligan:
Barnes is essential, so make sure to grab him. If you can get a Shadow Word: Horror as well, that's great.

Stage One:
Draw and hold back whatever he plays, and on turn 4, put Barnes down. Whatever he pulls is a massive boon and you can keep rezzing it as often as possible. Use Vivid Nightmare on Obsidian Statue preferably, so you can abuse it's healing, but The Lich King and Y'Shaarj, Rage Unbound are also fine choices.

Use the Shadow Visions to search for whatever you need: more resurrection is most important, but healing with Great Healing Potion, or any of the various removal if need be (Shadow Word: Pain, Shadow Word: Horror, Spirit Lash, Mass Dispel, Excavated Evil).

If you have it, pop Shadow Essence on turn 6.

Stage Two:
If you have a Shadow Word: Horror, you can end it immediately, if not, it's fine, your huge minions and resurrections will take care of it.

Stage Three:
Anything he throws at you will be essentially worthless, because he cannot keep up with you. Go face with minions and burn him with Mind Blasts, and the match will be over quick.

My other Frozen Throne / Icecrown decks:
The Lower Citadel
     Lord Marrowgar (Control Paladin)
     Deathbringer Saurfang (Patron Warrior)
     Lady Deathwhisper (Odd Dragon Priest)

The Upper Reaches
     Blood-Queen Lana'thel (Zoolock)
     Professor Putricide (Elemental Mage)
     Sindragosa (Kingsbane Rogue)

The Frozen Throne - The Lich King
     Jade Druid vs. The Lich King
     Face Hunter vs. The Lich King
     Elemental Mage vs. The Lich King
     OTK Paladin vs. Lich King
     Resurrect Priest vs. The Lich King
     Mecha'thun Rogue vs. The Lich King
     Murloc Shaman vs. The Lich King
     Murloc Warlock vs. The Lich King
     C'Thun Warrior vs. The Lich King