Zak S can hit things with his axe all he wants, I prefer just bashing heads in with this sucker. Doomhammer has a long history in the Warcraft Universe, extending back before the popular MMO.
According to WoWWiki, the hammer belonged to the father of Ogrim Doomhammer, the warchief of the Horde during the events of Warcraft II. While the weapon itself is not indicative of leadership of the Orc Clans, it has been wielded by Warchiefs like Ogrim and Thrall. In fact, Ogrim himself gave Thrall both the hammer and leadership before dying from wounds received while aiding in the liberation of his fellow Orcs from internment camps.
I'd love to have this thing, not just because it looks badass, but it would also go great with the Thrall action figure I bought several years ago. Anyway, if you want a Doomhammer of your own, head on over to ThinkGeek.
(h/t Nerd Approved)