Swiffy now converts Flash content into HTML5, using SVG, see the concise article on the GoogleCodeBlog:
Currently it just works through uploading the swf to http://swiffy.googlelabs.com/, still nice to play with. See some examples here: http://swiffy.googlelabs.com/gallery.html
http://googlecode.blogspot.com/2011/06/swiffy-convert-swf-files-to-html5.html