The 800 lb gorilla of paper airplanes is... 800 lbs. 
http://www.theregister.co.uk/2012/03/26/desert_eagle/
http://greatpaperairplane.org/
Boys and their toys!

http://www.theregister.co.uk/2012/03/26/desert_eagle/
Quote
An Arizona aircraft museum reckons it has taken the record for the launch of the biggest ever paper plane: a 45ft (13.7m) long monster which glided to Earth last week from a height of 2,703ft (824m).
Pima Air & Space Museum's hefty 800lb (363kg) Arturo's Desert Eagle needed a helicopter to haul its 24ft (7.3m) wingspan off the ground, but video of the release indicates it really did fly at up to 98mph (158km/h), even if footage of what we imagine was a lively landing isn't yet available.
http://greatpaperairplane.org/
Quote
It’s not every day that a giant paper airplane is released high over the Arizona desert. In fact, it’s never been done. But that’s exactly what the Pima Air & Space Museum did on March 21, 2012. The video to the right is our first glimpse into the dramatic, historic flight. More videos to come as we gather footage.
A couple months ago, hundreds of kids came to the museum to show us what paper airplane flying was all about. And now, inspired by their enthusiasm, we built a 45-foot paper airplane (quite possibly the largest ever constructed) and flew it.
Boys and their toys!













