I originally put this post in the Non-Disney Parks category in October, but since it goes into great depth behind Philharmagic, I thought it would be just as appropriate here for more people to read.
Saw the following article in this month's issue of Computer Graphics World. It has a great feature on theme park 4D attractions around the world, but the piece for us is the article all about Disney's PhilharMagic. You'll have to scroll down to find it but that's easy. Enjoy!
http://www.cgw.com/ME2/dirmod.asp?sid=293489783F8B4BF1A771D796FB3431B7&nm =CGW&type=Publishing&mod=Publications%3A%3AArticle &mid=8F3A7027421841978F18BE895F87F791&tier=4&id =27 3F47D13E8B45F0935F7FBE9729EAC1