Slipknot's fourth album All Hope Is Gone from 2008, isn't as dark as it is depressing. It's a weird album, because while it has some of their most popular songs like Psychosocial, Sulfer, and the emotionally heavy Snuff, it has some of their most forgettable, and boring tracks like This Cold Black, Vendetta, and Butcher's Hook. Some of them are just flat out mediocre. In conclusion, it has some of their best work, but also a lot of the most forgettable.