Dave Shea’s CSS Zen Garden is a fantastic idea for several reasons. Like others have been saying today, it can and will hopefully be a place to direct people who doubt the ability of building a site with web standards and CSS that is also a pleasure to look at.
It can be done, and now there is “tranquil” place to do so. I especially like that he’s named it a Zen garden — a calm place to soothe the naysayers. I’m hoping to add something eventually, that is if I can come up with a design that’s worthy of being alongside what is already there.