It appears that there is a new Flash vulnerability that can take over your computer. Awesome.
HTML, CSS and text. That should be the core of every web site. Flash and embedded objects to enhance the site, but not to provide the only means to access your content.
That is unless you’re one of a few embedded object kind of web site, like YouTube. But for the majority of us, that won’t be the case. And even so, you can always provide download links to the videos if the user doesn’t have Flash enabled to view them from within your web page.