[guineapig]

Enchanter/Cleric or Enchanter/ Shaman in my humble opinion.

With cleric you just treat the animation as the tank and buff the hell out of it. Make sure agro stays on it and cleric keeps it alive. This combo is somewhat slow but fairly safe. Both classes have good lull spells too so you should rarely have to deal with more than one mob at a time.

With Shaman you have the advantage of a second pet and some mana efficient dots to help DPS. Also the haste and buffs are better for the pet. (SoW for travel!!!)

I have not done a duo with a druid before but I'm guessing that would be pretty sweet too with damage shields, dots, and SoW. Best part of this combo is the inclusion of PORTS!!!

Actually enchanter/druid might be the sweetest combo of them all. It adds snare and porting with only the loss of the additional pet.