en Cuevana 3. When most people think of the Muppets, they think of the colorful characters made out of fleece and foam. But as with every movie, it all starts on the written page. Jim Henson's team of writers began with Jerry Juhl, and he was joined by Jack Burns in penning the script for THE MUPPET MOVIE. When mixed with the soundtrack by Paul Williams and Kenny Ascher, it has become a well-loved classic.