Dark Heresy
Dark Heresy is a RPG set in the Warhammer 40,000 universe. It is to 40k as Warhammer Fantasy Role Playing is to Warhammer Fantasy Battle, and indeed uses a very similar system.
I actually know very little about DH, having not played it or bothered to nab the rulebook from anywhere, so hopefully some of you other fuckers will actually bother to write this article now that I've created it.
WHEE