I hear the whole Norse viking scene is making a comeback, as evidenced by this awesome Valkyrie hat. If you need to brush up on your mythology, this is from Wikipedia: In Norse mythology, a valkyrie (from Old Norse valkyrja “chooser of the slain”) is one of a host of female figures who decides who falls and dies in battle. Selecting among half of those who die in battle (the other half go to the goddess Freyja’s afterlife field Fólkvangr), the valkyries bring their chosen to the afterlife hall of the slain, Valhalla, ruled over by the god Odin. There, the deceased warriors become einherjar. When the einherjar are not preparing for the events of Ragnarök, the valkyries bear them mead. Valkyries also appear as lovers of heroes and other mortals, where they are sometimes described as the daughters of royalty, sometimes accompanied by ravens, and sometimes connected to swans or horses. In modern culture, valkyries have been the subject of works of art, musical works, video games and poetry.
Here is some more stuff, so you can be caught up while you where you cool Valkyrie hat and not be caught off guard.