Hi ,
I have developed a small widget for WP and WP MU, its called printeme and it enables readers to preview the print css version of the page their at, like printer friendly that you see almost in every media article.
You are able to edit the text to be shown, default is Printer friendly, you can call it what ever you want 
you can also choose for the printer icon to be shown.
Althoug the installation is very simple and following the standard plugin instalation, you still need to tweak the header of the template with a small php code.
All this is included in a small text readme first file.
If you are interested in this plug in I can make it available for download.
