Healer. Almost always. It's tricky to go solo, though, but at least I can heal myself which is a big hedge in not dieing too quickly. Ranged weapons is my choice of killing, melee is quite annoying, having to run around and push buttons to kill something.
On Age of Conan, I play a Priestess of Sett, which very cool. Thunder and lightening and healing, then I can pull out my bow and arrows, hehe.
On Star Wars Galaxies, they used to allow for two professions at once, that was way cool. Master Pistoleer and Master Doctor FTW. Now the game engine was dumbed down and I'm only a stinking Master Medic that gets her helmet handed to her often.