Bard + ?

[Tenlaar]

A bard can work as a partner for every class. One that I like a lot is shaman. Bard DoTs don't have an initial damage component so don't break root, which lets the bard + shaman combo stack a lot of DoT damage while root rotting. The bard regen + mana songs let a shaman keep truly ridiculous rates of mana regen going. The bard has the tools that a shaman is really missing- the ability to break camps (lull), really effectively CC (charm and mez), and snare. Really fun duo for dungeon camps.

Bard + enchanter is good. Crazy mana regen for the enchanter, double charmed pets, all the CC in the world.

Bard + a melee class isn't quite as fun to me but can also be done effectively with fear kiting and has practically no down time unless something goes real bad. Twisting snare, fear, haste, and a DoT that can be dropped to add in regen when needed will keep the xp flowing steady.

Bard + druid/wiz, they quad like normal but with the bard mana regen and after they drop a few nukes on the pack move in and use the AE DoTs to speed up kills. Druid/wiz meds while the bard pulls, good steady xp.

The versatility of a bard can make any duo workable.