I have not played the Darkness. I am really looking forward to CoD4 and HL2 episode 2 on PS3. Both due out in October. The portal gun looks totally cool!
I love my PS3, I just wish I had more time to play it. I haven't found a game yet that just owns me, I hear Rainbow Six is pretty cool as well. I spend time riding around the street on NFS|Carbon and the trails of Motorstorm.