I wanted to dress up as Jack Skellington from the Nightmare Before Christmas for Dragon Con '07. However, it is impossible to make a good Jack costume because his proportions are so drastically different from me and (hopefully) you. So, instead of a traditional costume, I built a nine-foot-tall mobile puppet that I could control from behind. The head is mostly paper mache reinforced with spray foam. The skeleton is PVC pipe. The suit was custom tailored by myself with the pin-stripes added with fabric paint. The hands are wood with copper wire knuckles for poseability. The harness I'm wearing is motocross armor that connects to Jack via a square aluminum pipe. Braced aluminum bars attach my shoes to his so he can walk. I'd love to make an instructable from this, but, alas, my documenting skills weren't great back then.