This is a video of the machine built by Youtube user Hknssn entirely out of LEGO that can fold and launch paper airplanes. Not very complicated paper airplanes mind you, but still better than anything I could make. I remember in high school physics class we had a paper airplane contest and I got disqualified for making a pirate hat instead.
Hit the jump for the video but you might want to turn the volume down on account of a very poor choice of soundtrack.
Thanks to Viscouse, who launched a paper airplane into space and eventually it's going to burn up in the sun. Man, I want to burn up in the sun.