WP Coda is a single column theme designed to mimics the functionality of the very popular Coda website
A 2 column fixed-width, free WordPress theme, with righthand sidebar, enabled for widgets.
A simple and clean two column WordPress theme
Star Press is a three column, red and white, widget and gravatar ready, fixed width theme
Fluid width, 2 or 3 columns, rotating or static header image(s), options page, Gravatars, highlighted author comments.
Fixed width, widget ready, right sidebar, three column, gravatar ready theme