Now that Flex 4.5 has [officially been announced][1] I wanted to show just how easy it is to start building mobile apps with Flex:
<iframe title="YouTube video player" width="640" height="390" src="http://www.youtube.com/embed/RAjbzIYlKGo?rel=0&hd=1" frameborder="0" allowfullscreen></iframe>

Very fun stuff! Let me know what you think.

 [1]: http://www.adobe.com/products/flex/mobile/