I've made a free child theme for the thematic framework.
It's aimed towards image-based blogs and uses the jquery masonry grid layout.
It has over 50+ theme options to color and style every aspect of the site.
Comes with detailed user guide and raw photoshop files for the image & icon sprites.
Requires wordpress 3.0+, Thematic (included in zip) and php.v5.
You can view the manual before downloading that highlights all the included theme options and installation guide.