You can do this from 66-70 for great (WoW Gold)exp, plus amazing faction turn ins. Head on out to Blade Mountains and go to Deaths Door. Here are the notable mobs to kill, plus what they do:

Death's Might
These are Felguard looking(Cheap WoW Gold) mobs. They Mortal Strike. They are the most abundant mob in this little area so learning how to deal with them is key. Ideally you can do anywhere from 4-8 of them at once. 8 is pushing it... 5 is the best bet for safety.

Death's Watch
These are eye looking things. They Mind Flay (or something similiar) you. If you pull one of these in an AoE just single target this one down while Consecrating the rest.

Void Hound
There are a few of these, you don't have to ever fight them really.. but in the off chance you do pull one they flame breath, but more importantly do a small punt back (which will interrupt your casting). Make sure these die first if you happen to get one in an AoE pull.

Death Forge Oversmith
These you will probably pull one or two of when you kill the smaller techie fellas. They aren't dangerous until you get them down to 30%, when they start forcing toxic stuff out their body (they emote this). Either stun them or run, as they will explode on the ground a movement slowing aoe poison sludge.

Deathforge Technicians
These guys are abundant in the southern area.. single target killing the Oversmiths then pulling these for AoE goodness. Only 6-7 is recommended, as they steal your armor (about 3k worth of armor)

This is a 2nd post with contributions from a few paladins giving some decent higher lvl farming places if you'd like to check it out! =D

You know you want it... You know you need it... YES! IT IS! He's finally talking about TANKING!

Oh thank god, I thought he would never end. If these are(Gold WoW) your thoughts have no fear, the tanking guide is here!