This Fist of the North Star action figure is highly poseable and comes with various interchangeable hands and an extra smashed face head to add to another figure. "Hokuto no Ken" comes out in January. You can order Fist of the Northstar action figures from Play Asia and Entertainment Earth. Via.
Update: You can now preorder Shin at Play-Asia.
*Previously: My last pick for best action figure accessory ever.