Just to let everyone know:
If you order a 30oz drink from Subway, you get a code (starting today, October 1st) that gets you into the Uncharted 3 multiplayer from today until the game releases.
People are already online playing the multilayer. I'm not sure if this is going on outside of America or not.
Here's a link to confirm, but yeah, go out there and get a drink from Subway and get on the Uncharted 3 multilayer if you have a PS3.