To go berserk, meaning out of control with anger or excitement: the phrase originates from stories of the Berserkers, but what do we really know about them? Dangerous to friend or foe, the Berserkers are said to have fought feuds in the nude or even to have taken magic mushrooms in battle, but how much of this is true? Joined by Dr. Roderick Dale, a specialist in Old Norse and Viking Studies, we debunk the myths and legends, deciphering the facts from fiction..