the best thing about css is its scalability across many platforms, the first giant step toward the eventual "write once-use everywhere" objective for repurposing web content to other formats.
That means a single stylesheet can drive an entire web site layout for a variety of platforms. no more tedious edits on a bunch of static pages to make changes. just edit the stylesheet and the changes are global.
I recently completed a mobile/handheld web project where I created a pure css web site with one stylesheet controlled both the fullsize desktop web site and the miniature handheld model without having to build separate sites for the same content in different sizes.
For the best selection of pure css web sites, visit [cssvault.com....] while many sites have a distinctive "blog look" to them, some of them are absolutely breathtaking not only for the visuals, but for blazing fast downloads, and some pretty innovative coding techniques.
ONE CAVEAT: make sure you have a couple of hours to spare, tho. it's easy to lose track of time at that site.