Insanity Warrior

What more screams 'insane warrior' than the Horsemans helm and the Dark Edge of Insanity axe!
Change your opponents and bring fear to their hearts.

  The Horseman's Horrific Helm

Valorous Dreadnaught Shoulderplates

Chestplate of the Northern Lights

Gauntlets of the Bold

Conqueror's Girdle

Legplates of the Bold

Ravaging Sabatons

Dark Edge of Insanity

Molten Shaman

In my opinion, quite possibly one of the best looking shaman sets out there for enhancement. The two fist weapons drop from Mount Hyjal trash

Cataclysm T5 Shaman Set
Tempest Strider Boots
Girdle of Fallen Stars
Orgrimmar Tabard
Claw of Molten Fury
Fist of Molten Fury

Death Knight Love

As Death Knights started in Wrath they missed out on having the old tier sets to obtain, but that isn't the end of the world. There are many off set pieces and look alikes to keep and old DK happy.

WoWWiki look alike site  will help you find sets that will make your DK look a bit more brighter, with less skulls.

The Worgan DK look in the first picture is made up of the following:
Myrmidon's Treads
Grips of Silent Justice
Leggings of Divine Retribution
Helm of the Illidari Shatterer
Belt of Seething Fury
Chivalric Chest
Frostblight Pauldrons
Shroud of Forgiveness
Slayer of the Lifeless