Veering a little off topic here but this year only reminds of me how awesome 2008 was for gaming, to me it was to gaming what 1999 was to movies. I mean, let's like what all came out last year:
Grand Theft Auto 4
Metal Gear Solid 4
Little Big Planet
Gears of War 2
Sure, we got some decent games this year (Modern Warfare 2 and Uncharted 2) but this year pales in comparison to the continuous blockbuster stream we had last year.
Anyways, my pick for game of the year would be Uncharted 2 as of right now, haven't had the chance to play Arkham Asylum or Modern Warfare 2 yet.