Orange, black, and gray combined to create a clean, great-looking theme. Supports rotating 125x125 sidebar ads, widgets, gravatars, and microformats. Valid XHTML and CSS. Based on Sandbox. Developed with SEO in mind. A premium-quality free theme.
The Nice Wee Theme is a clean, crisp design with a customisable avatar and header icon, enabling you to create something unique that suits the style of your site. Compatible with WordPress 2.9.
This theme was created for the purposes of a WordCamp Louisville presentation. It's fully functional and can be used for your blog but is probably better as a starting point or learning exercise. It doesn't have many features or optimizations of the more advanced themes for WordPress.
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Magatheme is a 3-column, widget-ready theme with a cool, minimalist magazine look. More info about features at bryanhelmig.com. 
Experimental Web Typography. Type dynamically re-sizes to maintain ideal line length. Released 2/28/09. 
A simple, two-column layout. Simplixity is entirely web standards compliant. 
AdSense Ready, five template pages, seven columns and more... M :) 
The WordPress theme was designed by Maruf Rahman, from over at Brightcherry. 
Midnight-Blue is a free theme designed for WordPress by GetFreeware.net. Released under Creative Commons GNU GPL. 
Orange, black, and gray combined to create a clean, great-looking theme. Supports rotating 125x125 sidebar ads, widgets, gravatars, and microformats. Valid XHTML and CSS. Based on Sandbox. Developed with SEO in mind. A premium-quality free theme. 
A dark two-column theme, which combines dark and light colors. Light version also available. 
The Nice Wee Theme is a clean, crisp design with a customisable avatar and header icon, enabling you to create something unique that suits the style of your site. Compatible with WordPress 2.9. 
A simple design layout for WordPress 3.0+. Supports custom menus and has one left sidebar. 
zKRally is a WordPress theme by zwwooooo. Without any plugins needed, widgets ready and threaded comments. 
This theme was created for the purposes of a WordCamp Louisville presentation. It's fully functional and can be used for your blog but is probably better as a starting point or learning exercise. It doesn't have many features or optimizations of the more advanced themes for WordPress. 
A travel or holiday orientated blog template, 2 columns, flexible width, based on old fashioned airmail envolopes. 0.6 fixes some CSS and Menu bugs 