Thanks to Gwiliker for this link. This is a program that lets you take any image and blow it up for print on 8.5x11 sheets of paper, which you fix together and mount, or whatever.
The Rasterbator creates huge, rasterized images from any picture. Upload an image, print the resulting multi-page pdf file and assemble the pages into extremely cool looking poster up to 20 meters in size.
Check out the Gallery!
Very cool! I see Frame 351 from the Patterson-Gimlin film hanging on my wall real soon!