Hmmm... well Uncharted 2 received near universal acclaim for its writing last year and playing/seeing the game multiple times it probably is one of the best put together scripts in gaming history.

Brian Cox's performance as Scolar Visari in Killzone 2 still gives me chills to this day, Visari is probably the all-time greatest fictional charismatic dictator in the history of video games.

The Metal Gear games have always been very well written to me, despite perceived convolution of the last game, it's still one of my all time favorite stories. I think the themes as well as characters and plot are all on a level video games are really overlooked for.