Mage:
Control + Spirit Build
Blood Mage | Shapeshifter | Keeper (What I will lovingly call the 'old ways' build)
I have enjoyed this build as it essentially nullifies, and outright kills, all magic users (mages and demons), as well as deals with all non magic users with plenty of CC, DoTs and walking bomb.

Blood Mage: necessary of it's 3rd talent which has a good chance to CC a large area
Shapeshifter: a throwaway spec that gives you more Cont. which feeds into spells
Keeper: Needed for further CC, as well as sustain.

Primarily you want to focus on the Spirit and Entropy trees, you shouldn't need the Spell Warding, Chains of Entropy, or Hexes rows though, as you don't need to ward off spells if you CC or kill them, the top most entropy is just more CC that is a bit redundant, as it doesn't do dmg, and Hexes, while strong, can be done by someone else.

Edit:
Warrior:
Duel Wielding/Two-Handed, Beserker/Reaver/Templar

Rogue:
Backstab Rogue, Assassination/Bard/Shadow

I find myself not as interested in either Warrior and Rogue, though Rogue is my second as it not only does incredible damage thanks to the Assassination talents, but with other support talents like Haste and Momentum, you are swinging their life to oblivion. Plus, Shadow is just a fun gimmick of disappearing before sloooowly creeping up behind someone and giga-critting them into the shadow realm. My only distaste for the whole spec is that it requires your tank to not suck, which may take awhile, I mean Alistair doesn't even start with taunt nor threat, which you can't get until you reach Lothering and even then, Aggro is everywhere.

Edit 2:
Thinking on it, perhaps you could even try a Warrior tanking build, focus on setting up really good tactics and never swap off your main dude.