Flash is a wonderful tool for tutorials and presentations, but as a main feature of a website it's a dead horse. It distracts from the point of the website and makes SEO almost impossible without very good supportive html and text, and if you're putting that much effort into your supportive html you might as well go the whole hog and do the full site in html, in my opinion.

Generally, if I'm surfing or looking for something and come across a site that's in Flash I'll hit my back button before it's finished loading, and look somewhere else.

Sorry to be so negative.