Free CSS Layouts
CSS Drive
This is a gallery of CSS layout designs and includes a CSS forum.
Learn CSS Positioning in Ten Steps
This short css tutorial examines the different layout properties available in CSS: position:static, position:relative, position:absolute, and float. The title sounds a bit optimistic to me.
CSS Play
A variety of cool menus and layouts are on display at this site.
CSS Layout Techniques at Glish.com
A resource for web designers and developers who want to learn CSS layout techniques to replace archaic table-based web page layouts.
The Layout Reservoir
2 and 3 column layouts are available for free on this site.
Little Boxes
A variety of different css layout examples including workarounds for CSS browser issues.
Advanced CSS Layouts: Step by Step
Learn how to create complex table-like layouts with CSS.
Layout-o-matic
This is a generator that creates the code for the layout from options that you can choose (i.e. 2-column and 3-column)
CSS Layouts
A tableless, CSS-based, liquid, three-column layout.
Open Source Web Design
Open Source Web Design is a community of designers and site owners sharing free web design templates as well as web design information. If you browse the site and sort the layouts by most recent, you will find some css-based layouts.