No not the Flex from your compiler class. Apparently, Macromedia's Flex is a markup + oop servlet based way to generate applications on top of the Flash VM. Sounds intriguing, but you have to inhale J2EE to use it. Granted there's a lot of Tomcat knowledge out there, but this ain't a low barrier to entry.
In any event, Macromedia has appointed Christophe Coenraets as their evangelist for this technology, and he has a weblog. There's also more information over at Artima, from Sean Neville.