Sadly, this is the final "Aperture Investment Opportunity" video that Valve's dropping in support of Portal 2 (which drops next Tuesday). On the plus side, it shows off the high-tech boots your character (at least your character in the single-player campaign) rocks to help survive those 500-meter falls. Also on the plus side, THE GAME'S COMING OUT IN A WEEK! *hyperventilates* Sorry, we've only been waiting for this for five years.