Last year during GDC, THQ let loose tons of balloons with Homefront marketing material strapped to them. The highly publicized stunt sure was visible. The balloons fell in the San Francisco bay, all over town, and generally made THQ look like asses.
Of course, those were just regular old balloons. EA and Bioware are going one step further by strapping full retail copies of Mass Effect 3 to weather balloons. The derigibles will enter the stratosphere and come back down to Earth where hungry fans can pick up the game well before release.
EA will be releasing balloons in New York, San Francisco, Las Vegas, Berlin, London, and Paris. Hopefully they'll all converge over my house where I can collect them and ship copies out to everyone who reads GR.
Ah, see?! You thought I was going to get selfish there huh! I'm off to calibrate the weather balloons.