Wes,
My neighbor worked for them for a while; he has since moved. I worked with him on some projects (he had his own design business). There are some indendent contractors that work with Disney (and others) that might be of interest to you as well. Most of their names escape me now, but one I recall is called Ride & Show Eng'g.
http://www.rideshow.com/ Another one is in Van Nuys; even did some work at their site, but heck I just can't remember their name....It was probably some 20+ years ago.
Only project of some significance I worked on, was the fisherman that's taken under by the shark in the Jaws exibit at Universal.
Andys