I work at Pacific Science Center and I'm stoked about our MARs. We've got a butterfly, an orca, a t-rex, and a Gemini capsule. I heard the L.A. zoo pulled their's out and that we are the only ones on the west coast with MARs.
Here's a link to an article on our website:
http://www.pacsci.org/articles/moldarama_101608.html