Behold Minecraft's Secret Mob, The Skull-Popping Wither

Well, I suppose it's not really secret anymore, since today we learn via Mr Hogarty, who is some kind of Minecraft community sentinel these days, that the current version of Minecraft contains a new super-tough mob, the Wither. It seems that the thread-headed aberration, which is super tough and fires bolts which can destroy blocks and "wither" you, is locked up in the code pending a forthcoming version of the game. Needless to say, enterprising Minecraftians have figured out how to spawn it in the game, so you can see it below. The video also summarises a bunch of other stuff from forthcoming Minecraft features like, uh, potplants.