Yesterday, you had a few options to watch Uncharted 2 get played. One was to use the spy camera you set up in my house. But I deactivated it. The other was to be at events like this.
In the video you're seeing a brief moment of multiplayer Uncharted 2 action as filmed at Sony's Bellevue, Washington event for next week's big PlaySation 3 game. The video was shot by swag-shirt hoarding Kotaku-reader Jon Q, who drove to the Bellevue's Lincoln Square Cinema to witness the spectacle.
So that's gaming on the big screen, projected via PS3s hooked up to special Sony digital movie theatre screens. What better way would there be to use a movie theatre than to play a game in it?