Bioshock for the 360 and PC. I got a chance to play the demo on the 360 and am pretty impressed by the game so far.
The graphics are good, movement and fighting are good too.
This game is a survival horror and reminds me a lot of half life 2. It uses the unreal engine.
The storyline... As I've always stated, I don't keep track of the storylines very often, but this one seems to take place in an underwater city, where a bunch of crazed zombie-like enemies are, as well as some robots/automatons.
Some of the machines, after being beaten, can be hacked to destroy your enemies, etc, which is a pretty cool feature.
I'm not writing much about this game, because it generally isn't my type of game, although I did like half life 2. One thing you sometimes can't see in games is how repetitive they are in the long-run. As long as this game isn't repetitive, it may be a great game, and even though it is classified as a shooter, I believe it's presented in more of a survival horror fashion.
This could be a great game... only time will tell..