Woohoo! The guys I'm working for made some of the stuff you see in that video (like the Rock Monster). They've made a few things for Ben Armstrong at Netherworld, and for a lot of the other big name haunts as well. Being on the construction side of some of these big high-end animations and props gives you a new appreciation for just how developed the haunt industry is.
I still remember my first pro haunt; I was in grade school, volunteering at the local Jaycees haunt. Highest tech there was the strobe light. Man, how things have changed.
When choosing between two evils, always go with the one you haven't tried yet.