Totally Unobtrusive (and totally awesome) Upside Down Text

"There is a huge need for upside down text on the web. With everyone "going mobile," developers cannot simply rely on users having their screens oriented the same way all the time. I went through all of the possible options for creating upside down text and finally came up with a totally unobtrusive, Unicode enabled, completely web-changing piece of code"

http://johndyer.name/post/2008/04/Stupid-JavaScript-Tricks-Totally-Unobtrusive-Upside-Down-Text.aspx