Well so far I have a:
Monk 56 - Hell
Barb 51 - Hell
Witch Doktor 39 - Nightmare
Demon Huntard 37 - Nightmare
Wizard 26 - Faceroll (Normal)
Geez it's getting a bit challenging in Hell esp. if you are undergeared and soloing. Molten Vortex Wallers suck
as do Teleporter Invulnerable Minions Fire Chains