I've just completed Dead Space on the PS3 and my god... what a game! It's basically Resident Evil in space... but you can actually run with your weapons drawn, and it's a hell of a lot more scary, i did jump out of my skin on numerous occasions, and once spilt my cup of tea of all over myself! It takes a lot of it's inspiration from horror classics such as John Carpenters 'The Thing' & Ridley Scotts 'Aliens'... Highly recommended!