Not really a site showcase, but a Simple CSS plugin “showcase” 🙂
I put together a quick video on installing and using the Simple CSS plugin. Also shown, for those of you, like me, with “not-so-20’s-any-more” eyesight, how to increase the text size of the Simple CSS editor 🙂
http://snifflevalve.com/tutorials/other-simple-css
Cheers!
Lyle