Check out this Chipotle map page:
http://www.chipotle.com/#flash/restaurants_locations

I'm working on a different website that wants to create something like this. I imagine it's flash with actionscript reading an xml file. Am I right? Any other ideas? I'd love to dig into this a bit with you all here.

There's no time pressure on this, luckily, so throw your ideas on the wall so to speak.