SLA Industries is one of my all time favourite RPG's. Its dark moody setting is perfect for the mature gamer.
At first it appears a simple gorefest, but more of the back ground you read the deeper and more twisted the world becomes.
Pros: The beautifully detailed game world
Cons: PHD in Math required for character generation. Ok its not that bad, but it can take 2 hours to create a rounded character.