Druids

Simple and Druidic. I really like the staff.

Feathermoon Headdress

Veil of Turning Leaves

Titan-Forged Leather Chestguard

Seafoam Gauntlets

Firescar Sash

Boots of Natural Grace

Twin's Pact

Human Hunter

I often over look male humans, mostly because I found they were rather plain to look at. But now I have changed my mind! They make the most excellent models.

 Battle Mender's Helm -  (Argent Crusade Quartermaster, Icecrown)
Black Dragonscale Shoulders - (Leatherworking)
Cloak of Subjugated Power - (G'eras, Shattrah City, 312 Justice Points)
Earthblood Chestguard - (Netherspite, Karazhan)
Tough Scorpid Bracers - (Leatherworking)
Tsunami Gloves - (Leatherworking)
Wrathful Gladiator's Waistguard - (Veteran Armour Quartermaster)
Heart-Flame Leggings - (Chess Event, Karazhan)
Boots of the Renewed Flight - (Eye of Eternity Herioc)
Lantresor's Warblade - (Message to Telaar Quest)

Poobah's Dress

Princess Poobah's Dress is a one of a kind looking robe, obtained through a small quest line the Stranglethorn Vale, starting with 'Message in a Bottle' and ending with 'Mukla's Demise'
It is an excellent robe to have if you are looking for a one off design and want to look a little different from the rest of the casters.

The Postmaster's Band - (Postmaster Malown, Stratholme)
Swiftheal Mantle - (Taloring)
Princess Poobah's Dress - (Mukla's Demise, Cape of Stranglethorn quest)
Laughing Skull Gloves
Soulguard Girdle - (Taloring)
Guardian's Silk Footguards - (Armour Quartermaster)

Dragonstalker Look-a-like

The Dragonstalker set is a tier 2 raid drop for Hunters, which is obtainable from Blackwing Lair. The first boss in Blackwing Lair cannot be soloed so it may take you and a few friends to grind, however, there is a recoloured version of the armour, which in my opinion, looks better.

Dream Wing Helm - (Shadowlabs Herioc, Ambassador Hellmaw)

Wyrmfury Pauldrons - (Old Hillsbrad Herioc, Epoch Hunter)

Shard Encrusted Breastplate - (Mana Tombs Herioc, Tavarok)

Hungarhide Gauntlets - (Underbog Herioc, Hungarfen)

Archery Belt of the Broken - (Slave Pens Herioc, Mennu)

Sky-Hunter Swift Boots - (Sethekk Halls Normal/Herioc, Darkweaver Syth)

Emerald-Scale Greaves - (Old Hillsbrad Herioc, Captin Skarloc)

Emerald Eye Bracer - (Blood Furnace Herioc, Keli'dan the Breaker)

Savage Gladiator's PVP Gear

Savage Gladiator is the starting rare Wrath of the Lich King PVP set, and is now obtainable from Magistrix Lambriesse for the Horde, or Arcanist Ivrenne for the Alliance. These vendors can be found in Dalaran, in the designated faction area.
Personally I think there sets are quite uncommon, and are only purchasable for justice points so a lot of people may look over them

Warrior

Savage Gladiator's Battlegear

Death Knight

Savage Gladiator's Desecration

Shaman

Savage Gladiator's Thunderfist

Druid

Savage Gladiator's Sanctuary

Rogue
Savage Gladiator's Vestments

Hunter

Savage Gladiator's Pursuit

Paladin

Savage Gladiator's Vindication

Priest

Savage Gladiator's Raiment

Mage
Savage Gladiator's Regalia

Warlock

Savage Gladiator's Felshroud

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

Argent Inspired

This is a look which I plan on getting for my Paladin, after many, many failed attempts I have settled on this.
I always liked the big chunky looking boots on my blood elves, so any excuse to wear them, and I am also trying to step away from the bright tier looking sets that Paladin's usually have.

Shoulderguards of the Solemn Watch
Spiked Deathdealers
Legguards of the Peaceful Covenant
Ornate Saronite Waistguard
Gauntlets of Serene Blessing
Fang-Deflecting Faceguard
Enchanted Thorium Breastplate

Now to look for some matching weapons and a shield ...hmm