CSS Showcase

CSS Zen Garden
Dave Shea's cutting-edge CSS design site dedicated to pushing the Style Sheet envelope. Updated regularly.

CSS Beauty
A growing database of designer websites from around the world presented in stunning CSS. The site is expertly designed with CSS as well.

CSS Drive
I just found this site and I assume it's fairly new. It's similar in content to the other showcase sites and is worth spending some time at.

CSS Vault
A showcase site so successful that it was just sold by its owner and creator, Paul Scrivens, for a lot of money.

Web Standards Awards
"The Web Standards Awards aims to promote web site design using W3C standards by seeking out and highlighting the finest standards-compliant sites on the Internet."

Update: 2/11/05

Unmatched Style
Another showcase site I missed on my original post: "The idea stemmed from CSS Vault and CSS Beauty. Dusty and I were looking for a project to take on together and this became it."

Stylegala
"Stylegala is an online resource and inspiration guide for web agencies, designers and developers who take interest in websites that combine the powers of design, web standards and CSS."