Off topic, but: All the Doom levels rox
Some of the original artist (Im pretty sure Bobby Prince borrowed some of them):
Mettallica - No Remorse
Slayer - The crooked cross
Alice in Chains - Them Bones
Edit: And what has Doom to do with playstation? Anyway, if you want to play your PSX games on you PC
http://www.emuxhaven.net/ is one of 1000 places to go