Flash, in general, is one of those things that I should really pay more attention to. This is especially true in the context of Flex 2 and the Adobe Integrated Runtime (AIR). I was actively learning Flash up through Flash 6, but then I started to devote the majority of my resources towards ColdFusion and front end web development. As such, I can get around in Flash and I can do some cool things, but there's a ton of really cool stuff that I don't even know how to use (that is, if I know that it even exists).
That being said, I am hoping that this day will give me a good overview of some of the awesome features that ActionScript 3.0 will make available. Obviously, I'm not looking to master anything today, but I would like to see things that spark a fire; I'd like to see things that get me interested in actively learning Flash once again.