A little off the beaten track - "Warhammer movie? On a steampunk blog? Huh?" - but justified in two ways; firstly, the popularity of the WH40K universe amongst steampunk afficionados, and secondly, the very steam and diesel punk elements which underpin that universe.
A movie has been rumoured for years, with a fan movie produced (and unfortunately blocked by Games Workshop (GW), the owners of Warhammer), and countless mini-movies using elements of the GW computer in-game footage created by frustrated fans in the interim. Now, finally, an official WH40K movie - Ultramarines - is in production.