WoW World of Warcraft Alchemy
An Alchemist can mix herbs and brew it into various potions. The Alchemy profession is good for any class; melee fighters can create health potions and strength buffs and spellcasters can create mana potions and other related buffs. Alchemy is useful in many ways because it benefits both you and your friends. It can also help your economy because some potions sell very well to other players. Read the Alchemy guides over at Skryer to learn more.
A recommended gathering skill for Alchemy is the Herbalism skill. It will help you get all the herbs needed for the potions.