interesting you mention moving images on a page. Actually there have been studies after studies that show animated ads, ,logo, what not all will actually distract users and they spend less time on pages with any sort of animation that is not germane to the intent of the site.

But, yup, in my mind Flash is a great tool...but it needs to be used with restraint. And I think designers need to rethink their user of it as we move to more and more mobile computing.

same goes for those sites with embeded video that loads whether you want it to or not.