While working the other night I needed to research a particular implementation of what I was attempting to do. After Googling & hitting the usual suspects of dev sites, one site in particular really blew me – an arcade game site.  
 
The Exceptional Experience for me was that these guys prototype their game development in DHTML and when complete they then port to Flash.   Very impressive stuff!!
 
http://www.def-logic.com/_dhtml/
 
Patrick Dunphy