OP: Nice thread idea : ) Some of these I have but others are just my favorite graphics. Too many great ones to choose from so there's multiples in some categories.
1H sword = Bloodsurge, Kel'Thuzad's Blade of Agony and The Turning Tide Both special moments of my raiding days obtaining these.
2H Sword = Corrupted Ashbringer The lore, the special event wielding it going in to Scarlet Monastery, and how Tigole was quoted as it being a huge mistake to ever put this as a lootable item makes it that much more special.
Fist Weapon = Lobstmourne - Need I say more?
Dagger = Fang of Korialstrasz - For one, it's a fang of Korialstrasz, and it's also a severely limited graphic (2 out of 3 of the items that use this are gone).
1H Mace = So many great ones. I'll do 5, just cause.Misplaced Servo Arm,Crystal Spire of Karabor, Guiding Star,Hammer of the Twisting Nether, The Widow's Embrace
2H Mace = Two always stuck out to me. Torch of the Damned, Might of Menethil
1H Axe = 3 Drastically different colors, all awesome though.Grand Marshal's Handaxe, Blood Fury,Rising Tide
2H Axe = Tough choices for these. I'll go with, Draconic Avenger, Gorehowl, and Shadowmourne.
Staff = So many great ones from Classic as usual. Benediction, Grand Marshal's Stave, Soulseeker, Atiesh, Greatstaff of the Guardian.
Gun = Always liked this one. Dragonbreath Hand Cannon
Bow = Only 2 I'd ever use on my hunter. Soulstring, and Crypt Fiend Slayer
Off hand = Very proud of owning these 2 - Gem of Nerubis, Sapphiron's Left Eye
Shield = There's a bunch but I'll just do 4 :P - Red Dragonscale Protector, The Plague Bearer, The Face of Death, and Death's Bargain.
Crossbow = Love these two. Nerubian Slavemakerand Deliverance.
All in all, the best graphics have come from 60-80, hands down.