I'm clipping this because until today I thought this was an urban legend. Apparently a guy pulled it off in 1982 too. Years on the Internet has made me doubt everything.
It's the real deal allright. We have video and tracking statistics available for the curious at http://www.couchballoons.com. There are some site updates coming as we just returned from Southern California where another flight took place on Saturday, October, 10th, 2009.