I had to optimize a full flash (one page) website which ranked poorly in Google. I made a few html pages with the text content of the flash pages, then placed links pointing to them from a noscript tag placed after the flash loading script on the flash page. The results came fast for the desired keywords but the client told me that he wants visitors to get to the flash page from the SERP, not to the html pages so I placed a javascript redirect (window.open) on every html pages which redirects the browser to the flash page. It works fine but I wonder if this solution is against Google's webmaster guidelines (hidden text, providing different content for the searchbots and the human visitors)?
In my opinion it is relevant alternative content - visitors can see it if their browsers not javascript enabled and the html pages are containing the same content as the flash page. Is Google thinking this way too?