Dead Space: One of the best new IPs to come out in a while.
What I like so much about it...
I am a horror fan, so duh...
The graphics and sound presentation are some of the best I have seen, but what they do along with gameplay is add to the emersion level. I'm a 25 year veteran of gaming and Dead Space is the most emersive game I have ever played. Turn off the lights and you will start to feel like you are on the Ishimora. I do remember once when I was in one of the outside sequences, I found myself holding my breath. Every little detail that they added was to enhance the emersion and make you forget you are playing a game. No HUD, no sound in space, no fire in space, zero-G and zero-G effects, the graphics, the sound, the story. This is what a "next" generation game should be.
Yes the game has it's faults... it turned into and action game halfway through and left the horror behind, but by that time I was so emersed in the game, I didn't care.
There aren't many games that have such good synergy like Dead Space, it is just a good example of how all the little details come together to make something really good. (I would also put Bioshock and Batman AA in this category)
Just my opinion. But I will defend it with flaming chainsaws.