As a Demon Hunter I like to use this spec:
http://eu.battle.net/d3/en/calculato...Vhe!beZ!cbcccc
Hungering arrow is optional as you wont be using nearly enough hatred that a hatred generator is needed. Changing it for Rain of Vengeance may be more effective.
Chakram, Shuriken Cloud is the bread and butter skill. Run past mobs, using Vault combined with Tactical Advantage for maximum mobility, and the Shuriken Cloud takes care of everything for you.
Wolf companion is again optional aswell as Fan of Knives. I like FoK in bigger groups of enemies and the Wolf can pick off lonely targets.