*From other post - copy*

Protec Paladin + 3 Elemental Shamn + Resto Shaman
Lvl 70 - Utgarde Keep
Lvl 70 - Nexus
Lvl 71 - Azjol Nerub
Lvl 72 - Ahn'kahet (This was by far the best multiboxing challenge EVER! Thanks again to this community, it was a great gaming moment)

Hardly healing through trash. Going smoothly.

Lvl 73 - Drak'Tharon - Last boss the fight is awesome Nice shaman shield!
Lvl 74 - Gun'Drak - Mostly tank and spank bosses mainly those with higher hp, fun instance, got an awesome ring... Lvl 76 oh well...

These two last instances are awesome for huge xp and bosses quite linear imo.