How about ddshttpd (http://dd-sh.intercal.org.uk/web-server/)? A web server written using only sh(1), dd(1), and echo(1). It even supports running server side scripts ("ddsh-bin") and setting content type based on file extension.
I'm somewhat saddened to see that they don't own dd.sh domain anymore. It was at least twice as cute as no.de is :)