No I've never played bioshock though I have seen cool commercials for it. But your right, the whole atmosphere of zombies and monsters and shit is amazing. When the latest DOOM came out I sat in front of the computer with all the lights out and the volume up high. I've never jumped so high in my entire life haha. I turned this corner and WHAM some mutant was standing there. Thank god no one was home. I think John would have ribbed me forever.