Recently I came upon Deus Ex: Human Revolution. The original Deus Ex was awesome, and DX2 was total crap, so I decided to give this installment a shot.
The result? Well, let's put it this way - it's been years since a game hooked so much that I played it the whole night, almost 14 hours straight. That good and that immersive game it is.
If you like some FPS/stealth play combined with a intriguing story, then give it a shot.