Rockstar's announced that it's holding a multiplayer event for Grand Theft Auto IV later tonight.
It's a doubles event, so you need to get a friend and partner up. It'll run from 4pm to 7pm EST (9pm to 12am GMT).
The PSNs you need to add are:
To access the multiplayer, you need to bring up Niko's cell phone, games and Team Deathmatch.
If you can't get in, there will be a streaming feed and live chat at Rockstar's Social Club.
It'll hopefully get you in the mood for the upcoming release of The Lost and Damned and Gay Tony for PS3.