The Monster Page of Halloween Projects is a great resource. I have utilized it for information on building dummies, toe pinchers, flicker circuits, etc. Most links contain easy to follow instructions. The site admin does a good job at removing dead links also.
They are having an issue with some low life/lives stealing the ideas posted free on the site, creating a dvd and then selling it as their own creation on E-Bay. I know of at least haunter that pulled his instructions as a result of this.