Accessibility and usability do not matter in graphic design, after all it is art. But in web design, these can make or break a corporate website (depending on the relevance of the site to the corporate business).
Most annoying feature of all: loud music in flash. The purpose of any website is to attract viewers and not repel them. Any site which thrusts the viewer into a hell hole of “bang ” “bang” music with a flash intro will never earn the favour of the viewer ever (unless the viewer wishes to sue the site owners for causing hearing defects). This is one of the MAIN reasons why you need to keep your animation/graphic design site separate from your web design site. Moreover, the viewers should be warned that they are going to be tortured with