j/w
Demon Hunter
http://us.battle.net/d3/en/media/videos/?view#/demon-hunter-overview
Barbarian
http://us.battle.net/d3/en/media/videos/?view#/barbarian-overview
Monk
http://us.battle.net/d3/en/media/videos/?view#/monk-overview
Witch Doctor
http://us.battle.net/d3/en/media/videos/?view#/witch-doctor-overview
Wizard
http://us.battle.net/d3/en/media/videos/?view#/wizard-overview