Games Workshop has been working on opening up new shops around. They're celebrating the opening of their 100th. That's a lot of places to go get your minis-gaming on. To celebrate, they're letting people pick up a special miniature, Captain Centos, at North American locations this weekend.
Nothing special to do. Just go to a shop on the 28th or 29th of this month and get yourself a Captain Centos mini. GW has set up a handy store locator on their website to help you out.