Just because you aren't at PAX Prime this weekend doesn't mean you can't experience at least some of the joys and wonders that the show floor has to offer. For instance, the 10 straight minutes of Portal 2 co-op gameplay that we've dropped after the break, courtesy of GameTrailers -- hearing the "oohs" and "aahs" of the crowd on all sides, you'll feel just like you're there! And sure, you might not get a free Portal 2 shirt like this session's attendees did, but you can experience a heartwarming robot hug. And isn't that more than enough?