Universal Internet Explorer 6 CSS
What an interesting idea … instead of spending hours trying to make your site look the same in IE6 as modern web browsers, and instead of filling your markup with workarounds and other paraphernalia trying to appease the lame … simply server all IE6 users a stylesheet that displays all of the information nicely, but not attempting to recreate a design. So long as your markup is semantic and well ordered, it could work.
I can’t see any clients going for it, but it’s a lovely idea.