ColdFusion has been the ideal back-end for Flex applications for about as long as Flex has been around (ok, since Flex 2). And at MAX, Tim Buntel and I demoed some of what we are working on for the next versions of both ColdFusion and Flex that will make these applications even more powerful and their creation even more productive. Tim is looking for ColdFusion users, especially those with little or no Flex experience, to fill in a survey and possibly help test some new features.
If they do this one thing, it will make ColdFusion a no brainer decision to all the action script people out there looking for a backend.
And they need to do this now, ColdFusion 9, ColdFusion 10 will be too late.