NSFW should go without saying...
I recently saw a comedian joking about how the KKK has a website... so I decided to check it out. I've never, in my whole life, seen a website which fails so spectacularly in so many browsers. At points, there are literally 4 or 5 sections of text and images overlayed one another. Note: The distorted text is not a result of the screencaps; It's distorted on the page too.
Taken from: http://kkk.bz
It seems to be usable (though still quite ugly) in IE7 on Windows. Nothing else seems to support the site.