Portal 2: Coop Trailer and Meet Wheatley Video
...For science - you monster.
Some exciting stuff to view here today! The first teaser video of co-op mode in Portal 2. I can imagine how tricky that stuff is gonna get. Then we have a quick video introducing us to Wheatley, a little Personality Core that helps you along in the start of the game. Although, it appears the Sniper from TF2 just so happens to be this particular module, still some good laughs are to be had.
Check 'em out and enjoy!