The Darkness is one of my all-time favorite games. The sequel is a lot different, but it is still really good! I never read the graphic novels, so the original game was my introduction to The Darkness.
I played both on the 360, originally, and am now trying the PC version. I will note that even though I chose my optical out (the only device I have enabled), it was not pumping DTS surround sound out like other games do. Sad, because it loses a lot of OOMPF.
Still, it is good to be eating hearts again!