I don't know if you are aware of it Jacob but Adobe now have an Accessibility Centre with articles on making Flash and PDF documents accessible. How good the information is I couldn't say.
http://www.adobe.com/accessibility/index.html

I don't like the idea of having a so called accessible web site and one for the rest of us.

Designers have to get into the idea of designing a site that meets everyones needs, which if needs be, means a gracefull degredation of the visual effects without any loss of content.

When you find organisations operating two sites, very often the 'accessible site' which usually means text based, is not as content rich as the 'normal' site.

I think there is also a potential for people to only think about blind people when thinking about accessibility as if the only issue was whether you can see the site or not.

There are many issues to be considered such as cognitve awareness, colour perception, dyslexia, motor skills, etc.