At last, technology has evolved enough to accommodate our dream costume. Evan Booth built this Gaping Hole sweatshirt in late 2006, using a portable DVD player's LCD in front, connected to the camera in back by shoulder straps.

Brilliant! Now that video cameras are smaller, cheaper and higher quality, and screens are flatter and have longer battery life, imagine what you could do next Halloween with an all-HD setup. You have eight months.