Holy shit. I'm not going to tell you how awesome this game is. When I say holy shit nothing more needs to be said. Holy shit.
If you're looking for a reason to buy a PS3 (other than needing an awesome Blu-Ray player) it's Uncharted 2.
Funny thing, this commercial isn't far from the truth. Uncharted 2 is better than most movies released in 2009 (probably in the whole decade). Don't believe me? Read this.