Heard from a HAM, AL0I (Todd) that we have a high-altitude balloon flying in NC!
Last point I saw had it at 64,380 feet, and climbing. This is a Kaymont 800g balloon:
http://aprs.fi/?call=KJ4FMH-11&mt=roadmap&z=11&timerange=3600
Team:
http://757labs.org/wiki/Projects/hackerspacesinspace
Jonathan