[Toomuch]

Cleric/Druid, Shadowknight/Warrior/Paladin, Shaman/Enchanter - A Classic start to a group, healer/tank/slower.

If you don't want a classic tank-n-spank setup, I'd do something like druid, necro, mage. EZ kite mode with 2 really good pets. If you're not feeling the druid, an Enchanter for crack/cc would be handy.

Or you could do some kind of spin-off of the classic monk(or any tank)/shaman combo adding a druid for DS/buffs/ports, or just another dps class of whatever type.

IMO you're going to want some kind of trio that works with either a druid or wizard, for ports, period.

Personal Suggestion: SK/Shaman/Druid or Wizard. I'd pick wizard instead of druid here, because SK's generally don't have problems holding agro when the wizard goes pew pew. Along with that setup, you'd all 3 be going after different gear types too.

If you happened to manage a 4th, I'd go OgreSK/Enchanter/Cleric/Wizard to add that rez/cheal factor in. All benefit from the clarity/cc, you got ports/dps, and unstunnable agro-hog tank: the fully balanced group.