I started out "watching" various tv shows, but dropped that since I was really only listening anyway. Books on tape are great, but expensive and the things I want to read don't always get me into the vibe of the grim dark. Unless I'm painting LOTRSBG then I could listen to LOTR again and again. But my latest go to while painting are the TED Talks. There is nothing more grim dark than real life. I usually pick out the ones on ecological disasters, or future technologies that are here now. Give it a shot.