Join the official Portal 2 Steam Group!

http://steamcommunity.com/games/Portal2

Merchandise for Portal 2 has come to the Steam Store! Check out the awesome t-shirts. I don't know about you, but I'm buying an Aperture Laboratories work shirt right this instant.

Buy Portal 2 Merchandise

Congratulations to Omnicoder for winning the most recent contest over at myApertureLabs! Quark has been our Community Spotlight for a week or so now, but in light of being the contest winner I'm going to keep it up as the Spotlight for another week.

Go download it and give it a try, it's definitely a great map.

Download Quark by Omnicoder.

Also, be on the lookout for a contest from ThinkingWithPortals, sponsored by F7Lans! We will be having several huge prizes, including cash and Steam Gifts.

Here's the HD version of the full length Co-op Trailer that we saw at PAX this past weekend!

SkATYz_tF-U

Watch it, or I'll make you wish you could die.

EDIT 2
More videos from PAX! A few are the same from the other player as below, but the Hard Light Bridge and using the infinite fall mechanism as seen in the first Teaser
More Videos From PAX

EDIT
Five videos from IGN!
Video #1
Video #2
Video #3
Video #4
Extended Co-op Trailer

Screenshots of Co-op from Portal 2, straight from PAX 2010!